CN1735256A - Reuse method and device for dynamic frequency - Google Patents

Reuse method and device for dynamic frequency Download PDF

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CN1735256A
CN1735256A CN 200410056538 CN200410056538A CN1735256A CN 1735256 A CN1735256 A CN 1735256A CN 200410056538 CN200410056538 CN 200410056538 CN 200410056538 A CN200410056538 A CN 200410056538A CN 1735256 A CN1735256 A CN 1735256A
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frequency
user terminal
communication
p2p communication
set
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CN 200410056538
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Chinese (zh)
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孙礼
尚丹
潘晟
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皇家飞利浦电子股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks

Abstract

The dynamic frequency multiplexing method for P2P communication executed in communication network system comprises steps: according to predetermined wireless resource management scheme, determining a set candidate frequency for P2P communication in a sub zone; sending the candidate frequency to a user terminal in local sub zone; using this user's terminal to detect the signal strength and determine the proper P2P communication frequency for the user.

Description

一种动态频率重用方法及装置 A dynamic frequency reuse method and apparatus

技术领域 FIELD

本发明涉及一种通信网络,尤其涉及一种可用于用户终端进行直接通信、例如P2P(点到点对等)通信的动态频率重用方法及装置。 The present invention relates to a communication network, particularly to a terminal for a user to communicate directly, e.g. dynamic frequency P2P communication (point-peer) method and device reuse.

技术背景在传统的蜂窝移动通信系统中,用户终端必须通过基站的中继才能和另外一个用户终端进行通信。 BACKGROUND ART In a conventional cellular mobile communication system, the user terminal must communicate through the repeater to the base station and another user terminal. 图1显示了TD-SCDMA系统中的传统通信模式,用户终端UE1和UE2通过基站(节点B)和无线网络控制器(RNC)构成的通用移动通信系统地面无线接入网(UTRAN)交互信息。 FIG 1 shows a conventional mode of TD-SCDMA communication system, user terminals UE1 and UE2 via the base station (Node B) and Radio Network Controllers (RNC) Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) composed of interactive information. 然而,当驻留在同一小区的两个用户终端相距很近时,采用直接通信的方式,应当是一种更为合理的方法,这种方法就是所谓的点到点对等通信,简称P2P。 However, when a user resides in close proximity of the two terminals of the same cell, the use of direct communication, should be a more reasonable approach, this method is called point-to-peer communication, referred to as P2P. P2P通信典型地应用在上、下行链路均采用相同载频的TDD无线系统中,以下就以TD-SCDMA系统为例,介绍两种P2P通信模式。 P2P communication is typically used in the downlink use the same carrier frequency TDD wireless system, the following Take TD-SCDMA system as an example, describes two P2P communication mode.

图2显示了一种P2P通信模式。 Figure 2 shows a P2P communication mode. 如图2所示,UE1和UE2之间可直接建立用于传递业务数据的“P2P直接链路”(如实线所示)。 As shown, it can be established directly for transmitting traffic data "P2P direct link" (shown in solid lines) between the UE1 and UE2 2. 而UTRAN则通过其与UE之间的控制链路(如虚线所示)监控直接链路上的通信状况。 The control link between the UTRAN with UE (shown in phantom) on the communication condition monitored through the direct link. 这种由基站监控的P2P通信模式称为“在线P2P通信”。 Such monitoring P2P communication mode by a base station is called "online P2P communication." 在线P2P通信模式由于省却了基站的中继,从而节省了几乎50%的无线资源,同时仍能保持UTRAN对P2P通信的控制。 Since the P2P communication mode line obviates the relay base station, thereby saving radio resources almost 50%, while still maintaining control of the UTRAN P2P communication. 于2003年3月7日提交的申请人为皇家飞利浦电子股份有限公司、申请号分别为03119892.9和03119894.5的专利申请中披露了在线P2P通信模式的具体实现方法,这里以插入的方式引入该专利申请所揭示的内容。 Applicant in 2003 filed March 7 Royal Philips Electronics NV, Patent Application No. 03119892.9 and 03119894.5, respectively, in the disclosed specific method for online P2P communication mode, where the introduction of the patent application to insert a way reveal the content.

基于上述在线P2P通信模式,进一步可以建立一种在没有基站支持的情况下,由用户终端自组织地进行P2P通信的通信模式,称为离线P2P通信模式。 Line based on the P2P communication mode, may further establish a support base in the absence of a case, the ad-hoc by a user terminal to perform P2P communication mode of communication, known as off-line P2P communication mode. 图3示出离线P2P通信模式的示意图。 3 shows a schematic offline P2P communication mode in FIG. 如图所示,在进行离线P2P通信之前,UE1和UE2首先在传统通信模式下向UTRAN注册离线P2P通信服务,并获得彼此的P2P通信识别码,在与本申请同时提交的,申请人为皇家飞利浦电子股份有限公司,申请方案号为CN040033的专利申请中披露了UE获得P2P通信识别码的详细过程,这里以插入方式引入该专利申请所揭示的内容;然后,两个UE脱离UTRAN的监控和支持,根据注册过程中获得的彼此的P2P通信识别码自主地建立P2P通信;最后,在P2P通信结束后,UE1和UE2再返回到传统通信空闲模式。 As shown, offline prior to the P2P communication, the UE1 and UE2 first register offline P2P communication service to the UTRAN in the conventional communication mode, and get the P2P communication identification code to each other, in the filed concurrently with the present application, applicant Koninklijke Philips Electronics Corp., application programs Patent application No. CN040033 discloses a detailed procedure of the UE in P2P communication identification code is obtained, where the contents of which are incorporated in an inserted manner disclosed in patent application; then, two UE from the UTRAN monitoring and support establishing P2P communication with each other according to the P2P communication identifier obtained during the registration autonomously; Finally, after the P2P communication, the UE1 and UE2 return to the conventional communication idle mode.

这种离线P2P通信与在线P2P通信相比,不仅省去了信令的开销,而且即使UE位于无线网络覆盖的区域之外,如位于海洋、高山或战地等区域,仍能建立P2P通信链接。 This off-line P2P communication with the online P2P communication compared not only eliminates the overhead signaling, but even if the UE is located outside the coverage area of ​​a wireless network, such as in other marine, mountain or field area, able to establish P2P communication link. 此外,当位于小区内的两个UE距离很近时,也可采用这种离线P2P通信模式。 Further, when two UE located within a cell in close proximity, which may also be used off-line P2P communication mode. 此时,由于UTRAN和UE之间没有控制链路,因此,只要UE1和UE2的发射功率低到网络系统可以忽略的程度,用户就可以享用比传统通信便宜很多的离线P2P通信服务。 In this case, because there is no control link between the UTRAN and the UE, so long as UE1 and UE2 transmit power to the network system of low degree can be ignored, the user can enjoy a lot cheaper than traditional communications offline P2P communication service.

当驻留在通信网络覆盖范围内的一个小区中的两个用户终端,采用在线P2P通信模式或离线P2P通信模式建立P2P通信链路时,这两个用户终端一般使用当前小区的用于传统通信的频率进行P2P通信。 When two user terminals communicate within a cell residing in network coverage, using online or offline P2P communication mode P2P communication mode to establish the P2P communication link, both the current cell user terminals typically used for conventional communication P2P communication frequencies. 该用于传统通信的频率是网络运营商在组建通信网络时预先规划并分配给该小区使用的无线频率资源。 The frequency for a conventional communication network operator in advance planning and radio frequency resources allocated to the cell is used in the formation of a communication network. 因此,在该小区中,将会出现使用同一频率的两种通信:P2P通信和传统通信。 P2P communication and conventional communication: Accordingly, in the cell, both the communication using the same frequency will occur.

在同一小区中,不仅使用同一频率进行的P2P通信与传统通信之间会产生相互干扰,使用同一频率进行的不同对的P2P通信用户终端之间也会产生干扰。 Mutual interference is generated between the conventional P2P communication with the communication in the same cell, not carried out using the same frequency will interfere with P2P communication between different user terminals to use the same frequency of. 这种相互干扰在通信网络覆盖范围之外、特定区域内(P2P用户终端传输信号影响范围内)的不同对的离线P2P通信用户终端之间也同样存在。 This mutual interference outside of the communication network coverage between particular area (P2P user terminal within the scope of a transmission signal) of a different offline P2P communication user terminal also exist. 虽然也曾提出了例如上行链路/下行链路同步以及扰码重用等方法消除或减少干扰,但是仍旧不能从根本上解决P2P通信与传统通信之间、成对P2P通信用户终端之间因共用相同频率而相互干扰的问题。 Although also proposed, for example of uplink / downlink scrambling code synchronization and reusing method of eliminating or reducing interference, but with conventional P2P communication between a communication still does not solve the underlying P2P communication between a pair of user terminals by sharing same frequency interference problems.

发明内容 SUMMARY

本发明的目的是提供一种可用于P2P通信的动态频率重用方法及装置,采用该方法及装置,可以有效地消除在通信网络覆盖范围内因共用相同频率而在P2P通信与传统通信之间产生的干扰。 Object of the present invention is to provide a P2P communication for dynamic frequency reuse method and apparatus using this method and apparatus can effectively eliminate internal sharing the same frequency in a communication network coverage is generated between a conventional communication and P2P communication interference.

按照本发明的一种在一个通信网络系统中执行的可用于点到点对等(P2P)通信的动态频率重用方法,包括步骤:(a)根据通信网络的预定的无线资源管理方案,确定一个小区的可用于P2P通信的一组候选频率;(b)将该组候选频率传送给处于该小区中的一个用户终端,以用于该用户终端检测使用该组候选频率的信号的强度,从而确定该用户终端的可用于P2P通信频率。 According to a the present invention in a communication network system may be used to perform the method of dynamic frequency reuse point-peer (P2P) communication, comprising the steps of: (a) in accordance with a predetermined radio communication network resource management program, a determined a set of candidate frequencies may be used for P2P communication cell; (b) the group of candidate frequencies is transmitted to a user terminal in the cell, a user terminal for detecting the intensity of a signal using the set of candidate frequencies to determine the user terminal frequency can be used for P2P communication.

按照本发明的一种在一个用户终端中执行的可用于P2P通信的动态频率重用方法,包括步骤:接收一个通信网络系统发送的可用于该用户终端进行P2P通信的一组候选频率,其中,该组候选频率是该通信网络系统根据频率规划信息和无线资源管理策略信息确定的;检测使用该组候选频率的信号的强度,以确定该用户终端的可用于P2P通信频率。 A method according to dynamic frequency reuse may be used for the present invention, a P2P communication is executed in a user terminal, comprising the steps of: receiving a network communication system may be used to transmit the user terminal a set of candidate frequencies P2P communication, wherein, the group of candidate frequencies is determined by the communication network system according to frequency planning and radio resource management information policy information; intensity signal detected using the set of candidate frequencies to determine if the user terminal frequency can be used for P2P communication.

按照本发明的一种通信网络系统,包括:一个确定单元,用于根据通信网络的频率规划信息和无线资源管理策略信息,确定一个小区的可用于P2P通信的一组候选频率;一个发送单元,用于将该组候选频率传送给该小区中的一个用户终端,以用于该用户终端检测使用该组候选频率的信号的强度,从而确定该用户终端的P2P通信频率。 A communication network system according to the present invention, comprises: a determining unit configured to frequency planning and radio resource management information of the policy information communication network, a cell may be used to determine a set of candidate frequencies P2P communication; a transmission unit, the set of candidate frequencies for transmission to a user terminal in the cell, to the user terminal for the intensity signal detected using the set of candidate frequencies to determine the frequency of the P2P communication user terminal.

按照本发明的一种用户终端,包括:一个接收单元,用于接收一个通信网络系统发送的可用于该用户终端进行P2P通信的一组候选频率,其中,该组候选频率是该通信网络系统根据频率规划信息和无线资源管理策略信息确定的;一个检测单元,用于检测使用该组候选频率的信号的强度,以确定该用户终端的P2P通信频率。 A user terminal according to the present invention, comprising: a receiving unit for receiving a communication network system may be used to transmit the user terminal a set of candidate P2P communication frequencies, wherein the set of candidate frequencies that the communication network system according to frequency planning information and radio resource management policy information determined; a detection unit for detecting the frequency of P2P communication using the intensity signal is the set of candidate frequencies to determine the user terminal.

通过参考以下结合附图的说明以及权利要求书中的内容,并且随着对本发明的更全面的理解,本发明的其它目的及效果将变得更加清晰和易于理解。 Requirements and contents of the book with a fuller understanding of the present invention, other objects and advantages of the invention will become apparent and appreciated by reference to the following description and accompanying drawings right.

附图简述图1是通信系统中的传统通信模式示意图;图2是采用P2P通信模式的TD-SCDMA系统的示意图;图3是采用离线P2P通信模式的TD-SCDMA系统的示意图;图4示出了按照本发明一个实施例的小区频率分配的示意图;图5示出了按照本发明一个实施例的可用于P2P通信的动态频率重用方法的流程图;附图6是按照本发明一个实施例的实现可用于P2P通信的动态频率重用方法的用户终端与网络系统的组成示意图。 BRIEF DESCRIPTION FIG. 1 is a diagram illustrating a conventional communication mode in a communication system; FIG. 2 is a schematic view of the TD-SCDMA system uses a P2P communication mode; Figure 3 is a schematic TD-SCDMA system offline P2P communication mode; Figure 4 shows a schematic diagram of a cell of a frequency allocation example of the embodiment according to the present invention; FIG. 5 shows a flowchart of P2P communication can be used for dynamic frequency reuse method according to an embodiment of the present invention; Figure 6 is an embodiment according to the present invention, the user may be used to achieve dynamic frequency reuse method for P2P communication schematic diagram illustrating a terminal and the network system.

在所有附图中,相同的标号表示相似或相应的特征或功能。 In the drawings, like reference numerals designate similar or corresponding features or functions of.

发明详述按照本发明提出的动态频率重用方法,无线网络控制器根据当前通信网络的频率规划以及无线资源的管理策略,确定各小区的可用于P2P通信的候选频率,并通过各基站将各小区的候选频率广播给小区内的各用户终端。 DETAILED DESCRIPTION dynamic frequency reuse according to the method proposed by the present invention, a radio network controller according to the current frequency planning and network communication radio resources management strategy, each cell may be used for determining candidate frequencies P2P communication, by each base station and each cell candidate frequency broadcast to each user terminal in the cell. 位于小区内的一个用户终端,根据其服务小区的P2P通信候选频率,检测使用该候选频率进行通信的信号强度,并将检测结果报告给网络控制器。 Located within a cell and a user terminal according to the P2P communication frequency of its serving cell candidate, the candidate is detected using frequency communication signal strength, and report the detection results to the network controller. 网络控制器再根据检测结果,结合用户终端的服务小区当前所有候选频率资源的使用情况,在候选频率中选择一个适于用户终端进行P2P通信的频率并发送给用户终端。 The network controller according to the detection result and then, with a user terminal using the services of all the current cell candidate frequency resources, adapted to select a user terminal frequency P2P communication sent to the user terminal in the candidate frequency. 该用户终端利用该频率,即:动态重用频率资源,进行P2P通信。 The user terminal uses the frequency, namely: dynamic frequency reuse resources, the P2P communication.

以下,将结合附图,以TD-SCDMA系统为例,描述本发明提出的可用于P2P通信的动态频率重用方法。 Hereinafter, in conjunction with the accompanying drawings, in TD-SCDMA system as an example, described by the present invention can be used for dynamic frequency reuse method for P2P communication.

附图4是在一个通信网络中的小区频率分配示意图,假定该网络运营商拥有10可工作的频率:F1、F2、F3、F4、F5、F6、F7、F8、F9和F10。 Figure 4 is a cell in a communications network frequency assignment schematic assumed that the frequency of the network operator 10 may have to work: F1, F2, F3, F4, F5, F6, F7, F8, F9, and F10. 假定当前网络的频率规划所采用的频率重用因子为7,用户终端的服务小区A1的主频为F1,小区A1的邻近小区为A2、A3、A4、A5、A6和A7,其相应的主频依次为F2、F3、F4、F5、F6和F7。 Assumed that the current frequency planning and network employs a reuse factor of 7, the user terminal serving cell A1 clocked F1, the neighboring cells of cell A1 A2, A3, A4, A5, A6 and A7, the corresponding frequency followed by F2, F3, F4, F5, F6 and F7. 网络运营商拥有其它可工作的频率F8、F9和F10为保留频率,未分配给当前的任一小区作主频使用。 Network operators have other operating frequency F8, F9, and F10 is reserved frequency, currently not assigned to any cell as a frequency used.

附图5是以小区A1中的用户终端UE1为例,利用UE1与UTRAN之间的信令链路,获得P2P通信频率的过程。 Figure 5 is a user terminal UE1 in cell A1, for example, using the signaling link between the UE1 and the UTRAN, the process of obtaining frequency P2P communication.

如图5所示,首先:UTRAN根据频率规划信息及频率资源管理策略信息,确定小区A1中用户终端可用于P2P通信的候选频率(步骤S10)。 5, firstly: UTRAN based on the frequency planning information and frequency resource management policy information, determining the cell A1, the user terminal may be a candidate for a frequency P2P communication (step S10).

在确定小区A1中用户终端可用于P2P通信的候选频率时,在该网络运营商拥有的10可工作的频率F1至F10中,UTRAN首先排除小区A1的用于传统通信的工作主频F1。 When determining the cell A1, the user terminal can be used for P2P communication of candidate frequencies, the operating frequency 10 that network operator owned F1 to F10, UTRAN working frequency F1 for the first rule in the conventional communication cell A1. 然后,根据频率规划信息及无线资源管理策略,UTRAN进一步排除已规定的不能用于P2P通信的频率。 Then, according to the frequency planning information and radio resource management strategies, UTRAN further exclude specified frequency can not be used for P2P communication. 例如,频率F8已规定为紧急状况下使用的频率,因而禁止非紧急状况下P2P通信使用;邻近小区A2为传统通信业务负载超高的热点小区,已规定禁止其主频F2作为其它小区中P2P通信的候选频率。 For example, the frequency F8 is defined as a frequency to be used in emergency situations, and thus prevent P2P communication using the non-emergency conditions; A2 neighboring cell traffic load for the conventional ultra-high hot cell, which has been prohibited in the frequency cell F2 as other P2P candidate frequency communication. 由此,UTRAN可以确定在小区A1中用户终端可用于P2P通信的候选频率为F3、F4、F5、F6、F7、F9和F10。 Accordingly, UTRAN can determine the cell A1, the user terminal may be a candidate for the P2P communication frequency F3, F4, F5, F6, F7, F9 and F10.

在确定小区A1中用户终端可用于P2P通信的候选频率后,UTRAN可以将由这些候选频率组成的一个候选频率列表封装在一个系统信息消息中,并经由一个公共控制信道(例如:广播公共控制信道)广播该系统信息消息(步骤S20)。 After determining the cell A1, the user terminal can be used for P2P communication of candidate frequencies, the UTRAN frequency can be composed by a candidate list of candidate frequencies encapsulated in a system information message, via a common control channel (for example: a broadcast common control channel) the system information broadcast message (step S20).

其中,包含该候选频率的信息实体,可以单独构成一个系统信息消息而广播给小区中的用户终端,也可以作为其他系统信息消息的一个组成部分,与其他系统信息消息一起广播给小区中的用户终端。 Wherein, contains information entity the candidate frequency, may constitute a system information message individually and broadcast to the user terminals in a cell, it can be used as a component of the other system information messages, broadcast along with other system information messages to users in the cell terminal. 并且,UTRAN可以根据管理策略信息以及网络的运行状态(空闲或繁忙),周期性地更新和广播包含该候选频率的系统信息消息。 And, the UTRAN according to the operating state information, and network management policies (idle or busy), and periodically updated broadcast message containing system information of the candidate frequencies.

UE1读取广播公共控制信道上的该系统信息消息,并从该系统信息消息中提取候选频率(步骤S30)。 UE1 read the system information message broadcast on the common control channel, and extracts a candidate frequency (step S30) from the system information message.

根据提取的该候选频率,UE1检测使用这些候选频率进行通信的信号的强度(步骤S40)。 The extraction of the candidate frequency, UE1 detects these candidate frequency using a signal strength of a communication (step S40).

其中,使用这些候选频率进行通信的信号,可以是邻近小区的用于传统通信的信号,以及正在进行的P2P通信信号(该P2P通信信号可以包括当前小区内的P2P通信信号,也可以包括邻近小区中的P2P通信信号)。 Wherein, using these candidate frequency signal communication, the communication may be a signal for a conventional neighboring cell, and the ongoing P2P communication signals (which may include a P2P communication signal P2P communication signals in the current cell, the adjacent cell may also comprise the P2P communication signal). 因此,除了检测邻近小区的导频信号以得到使用候选频率的传统通信信号的强度外,UE1还需检测当前使用这些候选频率进行P2P通信的P2P信号的强度。 Thus, in addition to the detection of a neighboring cell to obtain a pilot signal strength of a communication signal using a conventional external candidate frequency, the UE1 is also detected with these current candidate frequency signal intensity P2P P2P communication.

根据检测的信号强度,UE1将这些候选频率进行排序(步骤S50)。 The detected signal strength, UE1 these candidate frequencies are sorted (step S50). 通常,检测的邻近小区的导频信号的强度越小,表明该邻近小区的基站与UE1之间的距离较远的可能性越大,若使用该邻近小区的主频作为UE1的P2P通信频率,则UE1的P2P通信链路与该邻近小区中的传统链路之间的干扰也就越小;检测的P2P信号的强度越小,表明该成对P2P通信用户终端与UE1之间的距离较远的可能性越大,若使用该成对P2P通信用户终端所使用的候选频率作为UE1的P2P通信频率,则UE1与该成对P2P通信用户终端之间的干扰也就越小。 Typically, the pilot signal strength of the detected neighbor cell is smaller, the more likely indicate the distance between the base station and the neighboring cell UE1 far, by using the neighboring cell frequency as the frequency of the UE1 P2P communication, UE1 the P2P communication link interference between the neighboring cells in the smaller conventional links; P2P smaller intensity signal detected, indicating the distance between the pair of the P2P communication with the user terminal UE1 is far the larger the possibility, if the candidate frequency using the P2P communication user terminal pair used in the P2P communication frequency UE1, the UE1 there is less interference with the P2P communication user terminal pair.

UE1将经过排序的候选频率作为检测结果报告给UTRAN(步骤S60)。 After ordering the candidate frequencies UE1 as a detection result is reported to the UTRAN (step S60). 当然,UE1也可以将检测到的使用这些候选频率的信号的强度作为检测结果直接报告给UTRAN。 Of course, UE1 may be detected intensity of these candidate frequency signal used as a detection result reported directly to the UTRAN. 另外,如有可能,UE1还可以将其所处位置的信息也报告给UTRAN,以供UTRAN在确定适合UE1的P2P通信频率时参考。 Further, if possible, UE1 may also be information about its location is also reported to the UTRAN, UTRAN for reference in determining the appropriate frequency UE1 P2P communication.

在收到UE1提供的上述检测结果后,UTRAN检查通信网络当前的运营状态,即:检查所有候选频率的当前使用状况。 Upon receipt of the detection result provided by the UE1, the UTRAN checks the current operating state of the communication network, namely: Check all the current candidate frequency usage. 根据UE1提供的检测结果,结合通信网络当前的运营状态,UTRAN为UE1选择一个合适的频率作为其P2P通信的频率(步骤S70)。 UE1 based on detection results provided by the combination of the current operating state of the communication network, the UTRAN UE1 to select a suitable frequency as the frequency of its P2P communication (step S70). 例如,由候选频率的当前使用状况可知,在可用于小区A1中用户终端进行P2P通信的候选频率中,若选择频率F3作为P2P通信频率的位于小区A1内的用户终端数目已经超过预定的门限值,则应尽可能排除F3作为UE1的P2P通信频率。 For example, a candidate frequency current usage can be seen, the candidate frequencies can be used in cell A1, the user terminal P2P communication, when selecting a frequency F3 as the P2P communication frequency located number of user terminals in the cell A1 has exceeded a predetermined threshold value, should be excluded as the P2P communication frequency F3 UE1 possible.

在确定UE1的P2P通信频率时,URTAN还可以参考UE1报告的位置信息(例如UE1通过全球定位系统GPS获得的UE1的位置信息),为UE1确定P2P通信频率。 In determining the UE1 P2P communication frequency, UTRAN can also refer to the location information (e.g. UE1 position information obtained by the global positioning system is the GPS UE1) reports UE1, UE1 determines the P2P communication frequencies. 例如,根据UE1的位置信息,在UE1附近,若已有其他用户正在使用F4进行P2P通信,则应尽可能排除F4作为UE1的P2P通信频率。 For example, the position information of the UE1, the UE1 near, Ruoyi another user is using P2P communication F4, F4 should be excluded as much as possible the P2P communication frequency UE1.

在根据UE1上报的检测结果,结合候选频率的当前使用状况以及可能得到的UE1的位置信息,为UE1选定(通常选择信号强度相对最弱的候选频率)适于P2P通信的频率后,UTRAN将该选定的频率发送给UE1,并更新此时通信网络的频率使用状况信息(步骤S80)。 In accordance with the detection result reported UE1, binding of the candidate frequency current usage and position information may be obtained UE1, UE1 is selected (usually the weakest signal strength of the candidate frequency) adapted P2P communication frequencies, the UTRAN will the selected frequency is transmitted to UE1, and at this time the communication network update frequency of usage information (step S80). 在本发明的上述实施例中,UTRAN应在排除了频率F1、F2、F8、尽可能排除频率F3和F4的前提下,尽可能在频率F5、F6、F7、F9和F10中,选择信号强度最弱的频率作为UE1进行P2P通信的频率。 In the above embodiment of the present invention, the UTRAN should be excluded frequencies F1, F2, F8, and to exclude as much as possible at the frequency F3 F4 premise as possible at the frequency F5, F6, F7, F9 and the F10, the selection signal strength UE1 weakest frequency as the frequency of the P2P communication.

UE1在收到UTRAN发送的该合适频率后,利用该频率,与另一用户终端建立P2P通信链路(步骤S90)。 UE1 after receiving the UTRAN sends the appropriate frequency, the frequency with which, with another user to establish P2P communication link (step S90) terminal.

当UE1使用该P2P通信频率完成P2P通信后,UE1向UTRAN发送一个释放其使用的P2P通信频率的请求(步骤S100)。 When UE1 P2P communication using the P2P communication frequency is completed, the UTRAN UE1 transmits a P2P communication request using the frequency (step S100) release. UTRAN在收到该释放请求后,回收该P2P通信频率,并更新此时通信网络的频率使用状况信息(步骤S110)。 UTRAN after receiving the release request, recovering the P2P communication frequency, and a frequency at this time to update the communication network usage information (step S110).

在上述实施例中,以小区A1内的用户终端UE1为例,描述了采用在线P2P通信模式的UE1获得P2P通信频率的过程,该过程也可以用于小区内欲采用离线P2P通信模式的用户终端先通过UTRAN获得P2P通信频率再进行离线P2P通信的情况。 In the above embodiment, the user terminal UE1 in the cell A1, for example, describes the P2P communication mode UE1 using online P2P communication frequency acquisition process, the process can also be used within the cell to be off-line P2P communication mode user terminal then to off-line P2P communication P2P communication frequency obtained by UTRAN.

当处于小区A1中的UE1欲进行离线P2P通信时,除了可以通过UTRAN获得P2P通信频率外,UE1还可以自行选择用于离线P2P通信的频率。 When UE1 in cell A1 is to be performed off-line P2P communication can be obtained in addition to the P2P communication by a frequency outside UTRAN, UE1 also can choose the frequency for the off-line P2P communication. 在该自行选择过程中,UE1首先获得UTRAN广播的、可用于小区A1中用户终端进行P2P的候选频率,与上述步骤不同的是,UE1在根据候选频率进行信号搜索并对候选频率所对应的信号强度进行排序后,不是接着执行步骤S60,而是从排序的候选频率中,将对应于检测的强度最小的信号的候选频率,确定为适于进行P2P通信的合适频率,并利用该合适频率,与另一用户终端进行P2P通信。 In this self-selection process, the UE1 obtained first broadcast by the UTRAN, the cell may be used in the user terminal A1 P2P candidate frequencies, the above-described step difference is that, in the UE1 signal candidate frequency search signal corresponding to a candidate frequency and according to after sorting strength is not then perform step S60, the sort but from the candidate frequencies, the frequency corresponding to the candidate of the minimum detected intensity signal, for determining the appropriate frequency suitable for P2P communication, and using the appropriate frequency, P2P communication with another user terminal.

在实际应用中,当UE1位于小区以内时,对于离线P2P通信,是由UTRAN确定UE1的P2P通信频率,还是由UE1自己决定P2P通信频率,可以通过UTRAN广播的P2P通信参数确定,关于该P2P通信参数的内容,在与本申请同时提交的,申请人为皇家飞利浦电子股份有限公司,申请方案号为CN040035的专利申请中有详细描述,这里以插入方式引入该专利申请所揭示的内容。 In practice, when the UE1 is located inside the cell, for off-line P2P communication is determined P2P communication frequency UE1 by the UTRAN, decided P2P communication frequency by the UE1 themselves, it may be determined by the P2P communication parameters broadcast by the UTRAN, on the P2P communication parameter content, in, applicant Koninklijke Philips Electronics NV, application programs Patent application No. CN040035 is described in detail, herein incorporated manner to insert the contents disclosed in patent application filed concurrently with the present. 若该P2P通信参数中没有明确指示,则可以由UE1自行决定或由UE1在注册离线P2P通信时与UTRAN协商决定。 If the P2P communication parameters, there is no clear indication, you can decide by a decision by the UE1 UE1 or when you register offline P2P communication with the UTRAN negotiation.

当UE1处于小区A1的网络覆盖范围以外时,用于离线P2P通信的频率应当由UE1自行确定。 When the UE1 is outside the network coverage of cell A1, the frequency should be used for off-line P2P communication shall be determined by UE1. 在这种情况下,UE1可以利用在离开网络覆盖范围之前通过广播控制信道获得的候选频率,也可以利用在注册离线P2P通信服务时得到并存储在UE1的用户识别模块(SIM卡)中的候选频率,试图检测该候选频率所对应的导频信号和正在进行的P2P通信信号的强度,并选择对应于检测信号强度最小的候选频率(该强度最小的候选频率也可能是未搜索到信号的候选频率),作为离线P2P通信频率,从而可以减少和避免在P2P通信中与其他处于离线P2P通信的用户之间的相互干扰。 In this case, UE1 can use candidate frequency before leaving the network coverage obtained by the broadcast control channel, may be obtained using UE1 and stored in the candidate subscriber identity module (SIM card) in the P2P communication service registration offline frequency, attempts to detect the intensity of the P2P communication frequency signals corresponding to the candidate pilot signal and ongoing, and select the detection signal intensity corresponding to the candidate frequency minimum (minimum intensity of the candidate frequency search may not be a candidate to the signal frequency), as an offline P2P communication frequency, can be reduced and avoided in the P2P communication with other mutual interference between users offline P2P communication.

上述的可用于P2P通信的动态频率重用方法,不仅适用于规划的频率重用因子大于1的情况,而且还适用于频率重用因子等于1、但在同一小区中不同分区使用不同频率的情况,在这种情况下,可以为处于一个分区中的用户终端,从邻近分区的分配频率中动态地选择一个不同的频率以用于P2P通信,其选择过程与上述方法类似。 The above-described dynamic frequency reuse method may be used for P2P communication, not only for frequency planning reuse factor greater than 1, but also to a frequency reuse factor equal to 1, but different partitions using different frequencies situations in the same cell, in which the case, the user terminal may be in a partition, selecting a different frequency from the frequency distribution of the adjacent partition to dynamically for P2P communication, the selection process which is similar to the method described above.

上述可用于P2P通信的动态频率重用方法,不但可以用于两个用户终端之间的P2P通信,而且还可以用于一个发送终端与多个接收终端之间的多点传播通信,还可以用于多跳通信中任何一跳中的两个用户终端之间的直接通信。 Described above can be used for dynamic frequency reuse method of the P2P communication, not only it can be used for P2P communication between two user terminals, but also for multi-point communication a transmitted spread between the terminal and a plurality of receiving terminals, may also be used multihop direct communication between any two user terminals communicate hop in.

本发明的上述可用于P2P通信的动态频率重用方法,可以采用软件实现,也可以采用硬件实现,或采用软硬件结合的方式实现。 Wherein the dynamic frequency reuse may be used for P2P communication method of the present invention may be implemented in software, may be implemented in hardware, or realized by way of hardware and software.

按照本发明的一个实施例,在实现使得一个用户终端利用从网络系统获得的P2P通信频率进行P2P通信的过程中,该网络系统和用户终端的组成如附图6所示,其中与传统网络系统和用户终端相同的部件未在附图6中示出。 According to one embodiment of the present invention, in the realization of such a user terminal using the P2P communication frequency obtained from the network system in P2P communication, the network system composed of a user terminal and as shown in Figure 6, wherein a conventional network system and the user terminal 6, the same components not shown in the drawings.

如图6所示,通信网络系统UTRAN 100包括:一个确定单元120,用于根据通信网络的频率规划信息和无线资源管理策略信息,确定多个小区各自的可用于P2P通信的候选频率。 6, the UTRAN 100 communication network system comprising: a determination unit 120, based on the frequency information for a communication network planning information and radio resource management policy, determining a plurality of cells each candidate frequencies may be used for P2P communication. 其中的排除单元122,用于根据频率规划信息,在该通信网络所分配的频率中,排除一个小区用于传统通信的频率;和根据无线资源管理策略信息,排除不能被该小区中的用户终端用于P2P通信的频率,以将剩余的该通信网络所分配的频率,确定为该小区中的用户终端可用于P2P通信的所述候选频率。 Wherein the exclusion means 122 for the frequency planning information, the communications network at a frequency allocated in a cell for the exclusion of conventional communication frequency; radio resource management and policy information, a user terminal can not be excluded in the cell frequency for P2P communication, the remaining frequency assigned to the communications network, the user terminal determines that the cell may be used in the candidate frequencies P2P communication.

UTRAN中的发送单元130,将通过确定单元120确定的该候选频率经由广播控制信道发送给UE1。 The UTRAN transmission unit 130 transmits to the UE1 via the broadcast control channel by the candidate determination unit 120 determines the frequency.

UE1中的接收单元10,在收到该候选频率后,其中的检测单元20检测使用该候选频率的信号的强度。 UE1 receiving unit 10, after receiving the candidate frequency, wherein the intensity of the signal detecting unit 20 detects the candidate frequencies to use. 其中,该候选频率的信号包括:邻近小区的导频信号和UE1所处小区中的P2P通信信号。 Wherein, the candidate frequency signal comprising: a neighboring cell pilot signal and the P2P communication signals UE1 located in the cell. 通过发送单元30,UE1将检测结果报告给UTRAN;UTRAN中的接收单元150,在收到来自UE1的检测报告后,将该检测报告提供给选择单元124。 By sending unit 30, UE1 reports the detection result to the UTRAN; UTRAN, the receiving unit 150, after receiving detection reports from the UE1, and the test report 124 to the selection unit. 选择单元124,根据该检测报告,结合检查单元140检查的候选频率的当前使用状况,从候选频率中确定一个合适的频率,并经由发送单元130,将该合适的频率发送给UE1,以使得UE1可以利用该合适的频率进行P2P通信。 Selection unit 124, based on the inspection report, the candidate binding checking unit 140 checks a current frequency of usage, to determine an appropriate frequency from the candidate frequency, and transmits to the UE1 via a suitable frequency transmission unit 130, so that the UE1 you can utilize the appropriate frequency for P2P communication.

UE1中的接收单元10,在收到UTRAN发送的该合适的频率后,提供给P2P通信单元40,以与另一用户终端进行P2P通信。 UE1 in the receiving unit 10, after receiving the UTRAN sends the appropriate frequency, is supplied to the P2P communication unit 40, to another user terminal with a P2P communication.

此外,UE1还包括一个确定单元50,用于根据检测单元20的检测,将对应于信号强度最小的候选频率,自行确定为用于P2P通信的合适的频率;并将该P2P通信频率提供给P2P通信单元40。 Further, the UE1 further comprising a determination unit 50, according to the detection of the detection unit 20, the signal intensity corresponding to the smallest candidate frequency, the frequency of self-identified as suitable for the P2P communication; P2P communication and the frequency supplied to the P2P The communication unit 40. 该P2P通信单元40,利用UE1自行确定的该合适频率,与另一用户终端进行P2P通信。 The P2P communication unit 40, using the appropriate frequency of their own determination UE1 performs P2P communication with another user terminal.

有益效果通过上述结合附图对本发明的实施例的详细描述,从中可以看出:按照本发明提出的动态频率重用方法,通信网络系统能够根据管理策略信息、用户终端检测的邻近小区的导频信号强度和该用户终端的服务小区内的P2P通信信号强度以及通信网络的频率使用状况,动态地为小区中的用户终端选择一个合适的频率以进行P2P通信,以使得在该用户终端所在的服务小区范围内,P2P通信与传统的上下行通信使用不同的频率进行通信。 Advantageous Effects detailed description of embodiments of the present invention in conjunction with the accompanying drawings, it can be seen: dynamic frequency reuse method, a communication network system according to the present invention can be made on the pilot signal information of the management policy, the user terminal detects neighboring cells frequency usage condition P2P communication signal strength, and a communication network within the serving cell strength and the subscriber terminal, dynamically terminal selects an appropriate frequency for the users in the cell to perform P2P communication, so that the serving cell of the user terminal is located the range, P2P communication with a conventional uplink and downlink use different frequency for communication. 因此,可以有效地消除P2P通信与传统通信因共用相同频率进行通信而造成的相互干扰。 Thus, it is possible to effectively eliminate mutual interference with the P2P communication because the conventional communication share the same frequency for communication caused.

此外,按照本发明提出的动态频率重用方法,在为用户终端选择P2P通信频率时,还考虑了与正处于P2P通信中的成对P2P通信用户终端之间由于重用频率可能产生的P2P干扰,因此,无论是处于通信网络覆盖范围之内或之外,无论选择在线P2P通信模式或离线P2P通信模式,利用本发明方法所提供的P2P通信频率,都能够最大程度地避免和降低处于P2P通信无线范围内的成对P2P通信用户终端之间的相互干扰。 In addition, the dynamic frequency reuse according to the method proposed by the present invention, when the user terminal selects the P2P communication frequency, and is also considered P2P P2P communication interference between pairs of user terminal in the P2P communication may be generated due to the frequency reuse is at, so , whether it is inside or outside the communication network coverage, the choice of line or off-line P2P communication mode P2P communication mode, using the method of the present invention provides a P2P communication frequency, can reduce the maximum extent and to avoid the P2P communication in wireless range mutual interference between pairs of user terminal in the P2P communication.

另外,按照本发明提出的动态频率重用方法,用户终端不需要网络为其分配一个新的频率资源,而是通过动态获得的重用频率即可以建立P2P通信的链路,因此,采用本发明提出的动态频率重用方法,能够进一步提高通信网络的容量。 Further, the proposed dynamic frequency reuse method according to the present invention, the network user terminal does not need to assign a new frequency resource, but reuse frequency by dynamically obtained i.e. P2P communication link may be established, therefore, the present invention proposes using the method of dynamic frequency reuse, can further improve the capacity of the communication network.

本领域技术人员应当理解,本发明的可用于P2P通信的动态频率重用方法及装置,不但可以用于两个用户终端之间的P2P通信,而且还可以用于一个发送终端与多个接收终端之间的多点传播通信,以及用于多跳通信中任何一跳中的两个用户终端之间的直接通信。 Those skilled in the art will appreciate that the present invention may be used for P2P communication dynamic frequency reuse method and apparatus, not only for P2P communication between two user terminals, but also to a transmitting terminal and a plurality of receiving terminals spread communication between multi-point, multi-hop and a direct communication between any two user terminals in the hop communication.

本领域技术人员应当理解,本发明所公开的可用于P2P通信的动态频率重用方法及装置,可以在不脱离本发明内容的基础上做出各种改进。 Those skilled in the art will appreciate that the present invention may be used in the disclosed method and apparatus for dynamic frequency reuse P2P communication, various modifications may be made without departing from the present invention. 因此,本发明的保护范围应当由所附的权利要求书的内容确定。 Thus, the contents of the book scope of the invention should be determined by the appended claims.

Claims (21)

  1. 1.一种在一个通信网络系统中执行的可用于点到点对等(P2P)通信的动态频率重用方法,包括步骤:(a)根据通信网络的预定的无线资源管理方案,确定一个小区的可用于P2P通信的一组候选频率;(b)将该组候选频率传送给处于该小区中的一个用户终端,以用于该用户终端检测使用该组候选频率的信号的强度,从而确定该用户终端的可用于P2P通信频率。 1. A method executed in a communication network system may be used for dynamic frequency point-peer (P2P) communication reuse method, comprising the steps of: (a) in accordance with a predetermined radio communication network resource management program, to determine a cell a set of candidate frequencies may be used for P2P communication; (b) the group of candidate frequencies is transmitted to a user terminal in the cell, a user terminal for detecting the intensity of a signal using the set of candidate frequencies to determine that the user the terminal can be used for P2P communication frequencies.
  2. 2.如权利要求1所述的频率重用方法,其中,该预定的无线资源管理方案包括:该通信网络的频率规划信息和无线资源管理策略信息。 2. The frequency reuse method according to claim 1, wherein the predetermined radio resource management scheme comprising: a frequency planning information of the communications network and a radio resource management policy information.
  3. 3.如权利要求2所述的频率重用方法,其中,步骤(a)包括:(a1)根据所述频率规划信息,在该通信网络所分配的频率中,排除该小区用于传统通信的频率;(a2)根据所述无线资源管理策略信息,排除不能被该小区中的用户终端用于P2P通信的频率;(a3)将剩余的该通信网络所分配的频率,确定为该小区中的用户终端可用于P2P通信的该组候选频率。 3. The frequency reuse method according to claim 2, wherein step (a) comprises: (a1) based on the frequency planning information, the communications network at a frequency allocated in the frequency of the excluded cell for conventional communication ; (A2) according to said radio resource management policy information, the cell can not be excluded in a user terminal for P2P communication frequency; (A3) the remainder of the allocated frequency communication network, the user determines that the cell the set of candidate frequencies a terminal can be used for P2P communication.
  4. 4.如权利要求1或2所述的频率重用方法,其中,所述通信网络系统经由广播控制信道将该组候选频率发送给所述用户终端。 4. The frequency or the reuse method of claim 12, wherein said communication network system via a broadcast control channel frequency of the set of candidates sent to the user terminal.
  5. 5.如权利要求4所述的频率重用方法,还包括步骤:(c)接收来自所述用户终端的一个检测报告,该检测报告包括所述用户终端检测的使用该组候选频率的信号的强度;(d)根据该检测报告,从该组候选频率中确定一个合适的频率;(e)将该合适的频率发送给所述用户终端,以使得所述用户终端可以利用该合适的频率进行P2P通信。 5. The frequency reuse method according to claim 4, further comprising the step of: (c) receiving a test report from the user terminal, the user terminal detects the report includes the signal strength of the detected frequency using the set of candidate ; (d) according to the test report, a suitable frequency is determined from the set of candidate frequencies; (e) the appropriate frequency of the transmission to the user terminal, so that the user terminal can use the appropriate frequency for P2P communication.
  6. 6.如权利要求5所述的频率重用方法,其中步骤(d)还包括:检查该组候选频率的当前使用状况;根据该检查结果,确定所述合适的频率。 6. The frequency reuse method according to claim 5, wherein step (d) further comprising: checking the current set of candidate frequencies of usage; based on the examination result, determining the appropriate frequency.
  7. 7.如权利要求5所述的频率重用方法,其中步骤(d)还包括:根据通过接收该用户终端发送的位置报告所获得的该用户终端的位置信息,确定所述合适的频率。 7. The method of frequency reuse according to claim 5, wherein step (d) further comprises: based on the position information of the user terminal by receiving a location report sent by the user terminal obtained by determining the appropriate frequency.
  8. 8.如权利要求4所述的频率重用方法,还包括步骤:接收来自所述用户终端的一个释放所述合适频率的消息;根据该释放消息,回收所述合适频率。 4 8. The frequency reusing method according to claim, further comprising the step of: receiving a release message to the appropriate frequency from the user terminal; According to this release message, recovering the appropriate frequency.
  9. 9.一种在一个用户终端中执行的可用于P2P通信的动态频率重用方法,包括步骤:接收一个通信网络系统发送的可用于该用户终端进行P2P通信的一组候选频率,其中,该组候选频率是该通信网络系统根据频率规划信息和无线资源管理策略信息确定的;检测使用该组候选频率的信号的强度,以确定该用户终端的可用于P2P通信频率。 9. A method performed in a user terminal can be used for dynamic frequency reuse P2P communication method, comprising the steps of: receiving a network communication system may be used to transmit the user terminal a set of candidate P2P communication frequencies, wherein the set of candidate the communication network system is a frequency determined according to the frequency planning information and radio resource management policy information; intensity signal detected using the set of candidate frequencies to determine if the user terminal frequency can be used for P2P communication.
  10. 10.如权利要求9所述的动态频率重用方法,其中,该组候选频率的信号包括:邻近小区的导频信号和该用户终端所处小区中的P2P通信信号。 10. The dynamic frequency reuse according to claim 9, wherein, the set of candidate frequency signal comprising: a neighboring cell pilot signal and the P2P communication user terminal is located in a cell.
  11. 11.如权利要求9或10所述的动态频率重用方法,还包括步骤:将检测结果报告给所述通信网络系统;接收所述通信网络系统发送的一个合适的频率,该合适的频率是所述通信网络系统根据该检测结果从该组候选频率中确定的;利用该合适的频率,与另一用户终端进行P2P通信。 11. The method of dynamic frequency reuse 9 or claim 10, further comprising the step of: reporting the detection result to the communication network system; receiving a suitable frequency transmission system of the communication network, which is the suitable frequency said communication network system is determined based on the detection result from the set of candidate frequencies; utilizing the appropriate frequency, P2P communication with another user terminal.
  12. 12.如权利要求11所述的动态频率重用方法,还包括步骤:向所述通信网络系统发送一个位置报告,以使得所述通信网络系统还根据该位置报告而确定所述合适的频率。 12. The method of dynamic frequency reuse according to claim 11, further comprising the step of: transmitting a location report to the communication network system, a communication network such that the system further determines the appropriate frequency based on the location report.
  13. 13.如权利要求9或10所述的动态频率重用方法,还包括步骤:根据检测结果,将该组候选频率中对应于信号强度最小的候选频率,确定为该用户终端用于P2P通信的合适的频率;利用该合适频率,与另一用户终端进行P2P通信。 Suitable detection result, the group of candidate frequencies corresponding to the minimum signal strength of a candidate frequency, determining for the user terminal for P2P communication: 13. The method of dynamic frequency reuse 9 or claim 10, further comprising the step of frequency; using the appropriate frequency, P2P communication with another user terminal.
  14. 14.一种通信网络系统,包括:一个确定单元,用于根据通信网络的频率规划信息和无线资源管理策略信息,确定一个小区的可用于P2P通信的一组候选频率;一个发送单元,用于将该组候选频率传送给该小区中的一个用户终端,以用于该用户终端检测使用该组候选频率的信号的强度,从而确定该用户终端的P2P通信频率。 14. A communication network system, comprising: a determining unit, based on the frequency information for a communication network planning information and radio resource management strategies, a cell may be used to determine a set of candidate frequencies P2P communication; a transmission unit for transmitting the set of candidate frequencies to a user terminal in the cell, to the user terminal for the intensity signal detected using the set of candidate frequencies to determine the frequency of the P2P communication user terminal.
  15. 15.如权利要求14所述的通信网络系统,其中,所述确定单元包括:一个排除单元,用于根据所述频率规划信息,在该通信网络所分配的频率中,排除该小区用于传统通信的频率;和根据所述无线资源管理策略信息,排除不能被该小区中的用户终端用于P2P通信的频率,以将剩余的该通信网络所分配的频率,确定为该小区中的用户终端可用于P2P通信的该组候选频率。 15. The communication network system according to claim 14, wherein said determining unit comprises: an exclusion unit for the frequency planning information, the communications network at a frequency allocated in the cell used in the conventional negative frequency communication; and radio resource management based on the policy information, the cell can not be excluded in a user terminal for P2P communication frequency to the frequency of the remaining allocated communication network, the user terminal determines that the cell the set of candidate frequencies may be used for P2P communication.
  16. 16.如权利要求15所述的通信网络系统,还包括:一个接收单元,用于接收来自所述用户终端的一个检测报告,该检测报告包括所述用户终端检测的使用该组候选频率的信号的强度;一个选择单元,根据该检测报告,从该组候选频率中确定一个合适的频率;其中,所述发送单元,将该合适的频率发送给所述用户终端,以使得所述用户终端可以利用该合适的频率进行P2P通信。 16. The communication network system according to claim 15, further comprising: a receiving unit for receiving a detection report from the user terminal, the report includes the user terminal detects signals of the set of candidate frequencies detected using strength; a selecting unit, based on the inspection report, to determine an appropriate frequency from the set of candidate frequencies; wherein said transmission means transmits the appropriate frequency to the user terminal, so that the user terminal may by using the appropriate frequency for P2P communication.
  17. 17.如权利要求16所述的通信网络系统,还包括:一个检查单元,用于检查该组候选频率的当前使用状况;其中,所述选择单元,根据该检查结果,确定所述合适的频率。 17. The communication network system according to claim 16, further comprising: a checking unit for checking the set of candidate frequency current usage; wherein the selection unit, based on the examination result, determining the appropriate frequency .
  18. 18.一种用户终端,包括:一个接收单元,用于接收一个通信网络系统发送的可用于该用户终端进行P2P通信的一组候选频率,其中,该组候选频率是该通信网络系统根据频率规划信息和无线资源管理策略信息确定的;一个检测单元,用于检测使用该组候选频率的信号的强度,以确定该用户终端的P2P通信频率。 18. A user terminal, comprising: a receiving unit for receiving a communication network system may be used to transmit the user terminal a set of candidate P2P communication frequencies, wherein the set of candidate frequencies that the communication network system according to a frequency plan information and radio resource management policy information determined; a detection unit for detecting the frequency of P2P communication using the intensity signal is the set of candidate frequencies to determine the user terminal.
  19. 19.如权利要求18所述的用户终端,其中,该组候选频率的信号包括:邻近小区的导频信号和该用户终端所处小区中的P2P通信信号。 19. The user terminal according to claim 18, wherein the set of candidate frequency signal comprising: a neighboring cell pilot signal and the P2P communication user terminal is located in a cell.
  20. 20.如权利要求19所述的用户终端,还包括:一个发送单元,用于将检测结果报告给所述通信网络系统;其中,所述接收单元,接收所述通信网络系统发送的一个合适的频率,该合适的频率是所述通信网络系统根据该检测结果从该组候选频率中确定的;该用户终端还包括:一个P2P通信单元,用于利用该合适的频率,与另一用户终端进行P2P通信。 Wherein a suitable transmission, the receiving unit receives the communication network system; a transmitting unit for reporting the detection result to the communication network system: 20. A user terminal as claimed in claim 19, further comprising frequency, the frequency is suitable to the communication network system is determined from the set of candidate frequencies based on the detection result; the user terminal further comprising: a P2P communication unit, the appropriate frequency for use with another user terminal P2P communication.
  21. 21.如权利要求19所述的用户终端,还包括:一个确定单元,用于根据检测结果,将该组候选频率中对应于信号强度最小的候选频率,确定为该用户终端用于P2P通信的合适的频率;一个P2P通信单元,用于利用该合适频率,与另一用户终端进行P2P通信。 21. The user terminal according to claim 19, further comprising: a determining unit, according to the detection result, the group of candidate frequencies corresponding to the minimum signal strength of a candidate frequency, determining for the user terminal for P2P communication suitable frequency; a P2P communication unit for using the appropriate frequency, P2P communication with another user terminal.
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