CN1819484A - Power controlling method of reversing link with mutual interfere for CDMA system - Google Patents

Power controlling method of reversing link with mutual interfere for CDMA system Download PDF

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CN1819484A
CN1819484A CNA2006100657803A CN200610065780A CN1819484A CN 1819484 A CN1819484 A CN 1819484A CN A2006100657803 A CNA2006100657803 A CN A2006100657803A CN 200610065780 A CN200610065780 A CN 200610065780A CN 1819484 A CN1819484 A CN 1819484A
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power
power control
user
interference
information
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CN100525139C (en
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高月红
张欣
杨大成
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北京邮电大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks
    • Y02D70/40According to the transmission technology
    • Y02D70/44Radio transmission systems, i.e. using radiation field

Abstract

The invention is used for effectively, reasonably and instantly allocating power resources in mobile communication system on order to minimize the interference of one user to others at the condition of not degrading the service quality of each user. By increasing the power controlling accuracy, the interference of system is decreased in the condition of guarantying the service quality of each user to improve the system performance and capacity.

Description

用于码分多址系统反向链路考虑相互干扰的功率控制方法 Code division multiple access system for reverse link power control to consider mutual interference method

技术领域 FIELD

本发明涉及一种码分多址(CDMA)系统反向链路(移动台到基站的链路,或上行链路)或其他具备相似的自干扰特征的系统中的功率控制方法,特别针对系统中不同用户之间降低相互干扰和保证传输质量的功率调整,从而在满足各用户的服务质量的同时,提高系统的整体性能和容量。 The present invention relates to a code division multiple access (CDMA) system, a reverse link (mobile station to base station link, or uplink) power control method or other similar self-interference characteristics includes a system, in particular for the system while reducing mutual interference and to ensure that the power adjustment of the transmission quality, thereby meeting quality of service of each user among the different users, to improve the overall performance and capacity of the system. 功率控制通过调整为不同用户分配的功率实现资源的合理分配,因此,功率控制也是资源分配策略的一种实现方法。 Power control power distribution for different users by adjusting the rational allocation of resources, and therefore, power control is also a resource allocation policy implementation.

背景技术 Background technique

随着移动通信的蓬勃发展,基于CDMA技术的系统以其独有的特点而受到广泛关注和重视。 With the rapid development of mobile communication systems based on CDMA technology with its unique features and has been widespread concern and attention. 但是,CDMA系统固有的、必须合理解决的问题—远近效应问题成为影响CDMA系统性能的一个重要因素。 However, the problem inherent in the CDMA system, must be properly addressed - near-far problem has become an important factor affecting the performance of the CDMA system. 如何合理分配可用功率以保证系统内的用户都可以享受所期望的服务质量成为一个研究热点。 How rational allocation of available power in the system to ensure that users can enjoy the desired quality of service has become a hot topic. 而由于功率控制方法可以很好的解决远近效应问题,因此成为CDMA系统中的一个关键技术,类似的,功率控制对于用户间存在较强相互干扰的系统的运转也很重要。 And because power control method can solve the near-far problem, thus becoming a key technology of CDMA system, a similar power control is also very important for the operation there is a strong mutual interference between users of the system. 该方法根据各个服务请求当前的信道状况、传输速率请求、系统当前的干扰水平等因素确定用户发射功率的变化,从而在保证各个服务要求的同时,使系统总干扰最小,从而提高系统的整体性能和容量。 The method request according to each service the current channel conditions, transmission rate request, a current interference level of the system and other factors determines the user transmit power change, thus ensuring each service requirements while the total interference system minimized, thereby improving overall system performance and capacity.

反向功率控制方法通常包括两个控制环:外环和内环。 Reverse power control method typically includes two control loops: outer and inner rings. 在外环功率控制中,基站(BS)根据是否能够正确接收终端(TE)发送来的数据信息,调整终端的外环功率控制设置点。 In outer loop power control, a base station (BS) according to whether information data correctly receiving terminal (TE) transmitted to adjust the outer loop power control terminal set point. 外环功率控制能够跟踪信道状况的变化,但是缺点是不够精确。 Outer loop power control can track changes in channel conditions, but the drawback is not accurate enough. 内环功率控制方法通过在基站和终端间引入反馈实现对信道变化情况的较精确跟踪。 Inner loop power control method between the base station and the terminal feedback is introduced to achieve a more accurate tracking of changes in the channel. 终端根据两个控制环作出的功率控制指令,适当的调整其发射功率,以保证其自身的服务质量要求并使得对其它终端的干扰最小化,从而提高系统性能和容量。 The terminal control loop to control the power of the two instructions, appropriate adjust its transmit power in order to ensure quality of service requirements of its own and other terminals such that interference to be minimized, thereby improving system performance and capacity.

发明内容 SUMMARY

为了跟踪信道状况的变化,并尽可能的降低系统中不同终端之间的相互干扰以提高系统容量,本发明提出了一种考虑多用户之间干扰情况的功率控制方法。 In order to track changes in channel conditions, and reduce the system interference between different terminals with each other as much as possible to increase system capacity, the present invention proposes a method of power control to consider interference between multiple users. 其基本原则是根据当前系统中接收到相同内环功率控制命令的用户占总用户的比例,确定终端最终应采取的功率调整趋势,包括升功率、降功率和保持当前功率三种调整趋势。 The basic principle is based on the current system, the user receives the same inner loop power control command proportion of the total users, determining a power adjustment should ultimately take trend terminal, including the ascending power, reduced power, and to keep the power current trend three adjustments.

本发明具体的实现步骤是:步骤1:在每个外环功率控制周期开始时,网络侧根据反向接收数据是否正确解码设置外环功率控制设置点。 Specific implementation of the present invention steps are: Step 1: At the beginning of each outer loop power control period, the network-side is correctly decoded outer loop power control set point set according to the reverse reception data.

步骤2:在每个内环功率控制时刻,网络将接收信号的信噪比(SINR)与步骤1中设定的外环功率控制设置点相比之后确定内环功率控制命令。 Step 2: outer loop power in each inner loop power control timing, the received network signal to noise ratio (SINR) signal is set to 1 in step determines the control set point as compared to the inner loop power control command after. 若接收信号信噪比小于设置点,则内环功率控制命令指示终端提高发射功率,否则指示终端降低发射功率。 If the received signal SNR is less than the set point, then the inner loop power control command instructing the terminal to increase the transmission power, or instruct the terminal to reduce the transmission power.

步骤3:终端通过前向的公共功率控制信道捕获所有的功率控制命令,确定升功率(或降功率)命令占总命令的比例,并将此比例与预设门限值相比,再结合终端自身的功控命令从而确定终端最终采取的功率调整策略。 Step 3: Capture terminal through a forward common power control channel for all the power control commands is determined or power (or power down) the ratio of the total order of command, and this ratio compared with a preset threshold value, combined with the terminal its power control commands to determine the final terminal power adjustment policies adopted.

步骤4:终端根据步骤3中确定的功率控制命令调整自身发射功率。 Step 4: The terminal determines in step 3 in the power control command to adjust its transmit power.

步骤5:若此外环功率控制周期结束,则返回步骤1,否则返回步骤2。 Step 5: If this outer loop power control period ends, return to step 1, otherwise it returns to step 2.

上面步骤3中确定的升功率(或降功率)命令所占的比例反映了下一个周期内系统潜在干扰增加(或降低)的程度。 Degree determined in the above step 3 liters power (or power down) command reflects the proportion of the next cycle of the system potential interference increase (or decrease) of. 若升功率命令比例很大,表明多数终端将提高自身的发射功率,从而将增加对其它用户的干扰;反之,多数用户降低发射功率将有助于系统干扰的降低。 If a large proportion of commands or power, indicate that the majority of the terminal to increase its transmit power, thereby increasing the interference to other users; the other hand, most users will help to reduce transmit power to reduce interference in the system. 终端在获知干扰的变化趋势及可能的程度之后,再确定自身的功率调整策略,从而能够使反向信号信噪比更快的收敛到外环功控设置点。 After the change of the terminal informed of the interference and to the extent possible, and then determine a power adjustment strategy itself, thereby enabling the signal to noise ratio faster convergence reverse outer loop power control set point to.

附图说明 BRIEF DESCRIPTION

结合以下附图以及具体实例对发明所做的详细描述将便于理解本发明的原理、步骤、特点和优点,附图中:图1是表示本发明在CDMA2000示例中的工作步骤。 Specific examples of the following figures and detailed description will be made of the invention facilitate an understanding of the principles of the present invention, steps, characteristics and advantages of the drawings in which: FIG. 1 is a step of the present invention showing the operation in a CDMA2000 examples.

图2是表示本发明在CDMA2000示例中,体现反向链路负荷及干扰水平的扇区平均RoT(Rise over Thermal)超标概率随每扇区话音用户数的变化情况。 FIG 2 is a diagram showing an example of the present invention in a CDMA2000 reflects the reverse link load and interference level of the sector average RoT (Rise over Thermal) with probability exceeding the number of users per sector of voice changes.

图3是表示本发明在CDMA2000示例中,话音用户平均中断概率随每扇区话音用户数的变化情况。 FIG 3 is a diagram showing an example of the present invention, in CDMA2000, the user voice average outage probability changes with the number of voice users per sector.

具体实施方式 Detailed ways

因为移动通信中业务的实现方案很多,为了便于理解,在此使用一种有代表性且普遍适用的例子——CDMA2000规范(由3GPP2制定)来阐述本发明所提出的功率控制方法。 Because the implementation of many mobile communication service, for ease of understanding, in this example the use of a representative and general application --CDMA2000 specification (developed by 3GPP2) to illustrate the power control method proposed by the present invention. 本发明对于所有具有这个示例中基本特征的应用场合普遍适用。 The present invention is generally applicable to all applications for this example has the basic characteristics.

扇区j根据用户i在反向链路上传输的数据帧是否正确解码设置外环功率控制设置点。 The user sector j transmit a data frame i decoded correctly disposed on the reverse link outer loop power control set point. 根据3GPP2的“1xEV-DV Evaluation Methodology(V13)”一文,若反向数据帧解码失败,则将设置点γij升高Δup=0.5dB;若反向数据帧正确解调,则将设置点降低Δdown=Δup/99=0.0505dB。 The 3GPP2's "1xEV-DV Evaluation Methodology (V13)" a text, if the reverse data frame decoding fails, the set point γij elevated Δup = 0.5dB; if the reverse data frames demodulated correctly, then the set point reduced Δdown = Δup / 99 = 0.0505dB.

使用公式(1)计算用户i的反向信号到达激活扇区j的信噪比:SINRij=Pti×LijΣk=1,j≠ik=MPk×Lkj+N0----(1)]]>其中,Pti为用户i的导频发射功率,Pk为用户k的总发射功率,Lij为用户i到达激活扇区j的路径损耗,N0为背景热噪声功率,M为系统中存在的激活用户数。 SNR reverse signal using Equation (1) calculates the user i reaches the activation sector j: SINRij = Pti & times; Lij & Sigma; k = 1, j & NotEqual; ik = MPk & times; Lkj + N0 ---- (1)]] > wherein, Pti is turned pilot transmit power of user i, Pk is the total transmit power of user k, Lij i reaches the user activates sector j pathloss, N0 is the background thermal noise power, M being present in the system user to activate number. 用SINRin_dB表示以dB为单位的信噪比。 Expressed in dB SNR with SINRin_dB.

基站将用户在t时刻反向链路上以dB为单位的实际信噪比SINRij_dB(t)与t时刻外环功控设置点γij(t)比较之后,确定t+1时刻的内环功控命令PCij(t+1),规则如下:PCij(t+1)=0SINRij_dB(t)>γij(t)1SINRij_dB<γij(t).]]>其中“1”表示升功率,“0”表示降功率。 After the base station to the user on a reverse link time t in dB of the actual SIR SINRij_dB (t) at time t and the outer loop power control set point γij (t), and determines t + 1 inner loop power control timing command PCij (t + 1), rules are as follows: PCij (t + 1) = 0SINRij_dB (t)> & gamma; ij (t) 1SINRij_dB & lt; & gamma; ij (t)]]> where "1" means liter power. " 0 "indicates the power drop.

用户通过公共功率控制信道,捕获所有的功控命令。 Users through common power control channel, capture all the power control commands. 令p表示以扇区j为激活扇区的用户(共Mj个)中内环功率控制命令为“1”的比例,即p=Σi∈MjPCij(t+1)Mj----(2)]]>当p较小时,说明下一个周期内升功率的用户较少,而降功率的用户较多,则每个用户受到的来自其它用户的干扰不太会增加而更有可能减少。 P represents sector j in order for the user to activate the sector (total number Mj) inner loop power control commands in a ratio of "1", i.e., p = & Sigma; i & Element; MjPCij (t + 1) Mj ---- ( 2)]]> when p is small, indicating that the next cycle of the user or power less power from the sky more users, then each user of the interference from other users will be less likely to increase more reduced . 因此,原本需要升功率的用户有可能在保持当前发射功率不变的同时提高反向链路信号的信噪比,这样一方面保证了自身的服务质量,同时也降低了对其它用户的干扰。 Therefore, the original need or power users likely to increase the reverse link signal to noise ratio while maintaining the current transmit power remains unchanged, so on the one hand to ensure the quality of the service itself, but also reduces the interference to other users. 当p较大时,下一周期的干扰很可能会增加,因此,原本需要降功率的用户不应再降低发射功率,而应保持甚至提高发射功率,否则由于干扰的增加而无法实现信噪比的增加。 When p is large, the interference of the next cycle is likely to increase, therefore, the original need to reduce power users should not reduce the transmission power, while maintaining or even improving the transmission power should be otherwise due to increased interference and noise ratio can not be achieved increase. 基于干扰之间相互作用和相互影响的基础上,移动台根据p值的不同,综合其自身功率控制命令的要求,采取不同的功控策略。 Based on the interaction between the base and the mutual influence of interference on the mobile station depending on the value of p, a combination of its own power control commands required to take a different power control strategies.

当p小于一个较低的门限plower(plower≤50%)时,即当“大部分”用户的功控命令为降功率时,功控命令为“1”的用户以概率qlower_inc增加发射功率,以概率1-qlower_inc保持当前发射功率;功控命令为“0”的用户以概率qlower_dec降低发射功率,否则保持当前发射功率。 When p is smaller than a lower threshold plower (plower≤50%), i.e., when the "majority" of the user when the power control command to the reduced power, the power control command is "1" probability qlower_inc user to increase the transmission power to probability 1-qlower_inc holding current transmit power; power control command is "0" with a probability of a user qlower_dec reduce the transmission power, or maintain the current transmission power.

当p大于一个较高的门限phigher(phigher≥50%)时,即当“大部分”用户的功控命令为升功率时,功控命令为“1”的用户以概率qhigher_inc增加发射功率,以概率1-qhigher_inc保持当前发射功率;功控命令为“0”的用户以概率qhigher_dec降低发射功率,否则保持当前发射功率。 When p is greater than a high threshold phigher (phigher≥50%), i.e., when the "majority" of the user when the power control command or power, the power control command is "1" probability qhigher_inc user to increase the transmission power to probability 1-qhigher_inc holding current transmit power; power control command is "0" with a probability of a user qhigher_dec reduce the transmission power, or maintain the current transmission power.

本发明中也考虑到了终端最大、最小发射功率等因素对发射功率的限制,选择终端可发射功率范围内的功率作为最终的发射功率。 The present invention also takes into account the terminal limits the maximum, minimum transmit power on the transmission power, the terminal may select a transmit power in the power range as a final transmission power. 此外,当用户处于软切换状态时,由于用户会同时接收到来自多个激活扇区的功控命令,为了保证各个激活扇区内的干扰情况稳定,终端直接将各个功控命令进行“与”逻辑运算后作为最终的功控命令,而不再采用上述方法。 Further, when the user is in soft handoff, since the user can simultaneously receive the power control command from a plurality of activated sectors, in order to ensure interference within each sector stable activation, terminal directly to the respective power control command "and" control command as the final logic operation function, instead of using the method described above.

综合以上可以看出,本发明提出的针对反向链路的新型功率控制算法,具有如下特点:1.以降低多用户间的相互干扰进而提高系统容量为目的。 Based on the above it can be seen, the present invention is presented novel power control algorithm for the reverse link, has the following characteristics: 1 to reduce mutual interference between multiple users and system capacity for the purpose.

2.由于考虑了干扰间的相互影响,用户的实际信噪比能够更加快速的收敛到外环功控设置点,有助于保证各用户的服务质量。 2. In consideration of the mutual influence of interference between the actual signal to noise ratio of users to more quickly converge to the outer loop power control set point, helping to ensure quality of each user.

3.用户根据不同的系统状况,综合自身的功率控制命令确定最终的功率调整方向,用户的功率调整策略中增加了“保持”策略。 3. Depending on the user's system status, its own integrated power control commands to determine the final direction of power adjustment, power adjustment policy for the user to add a "hold" strategy.

4.对具体的实现方式和协议规范不敏感,具备兼容性。 4. insensitive to the specific implementation and protocol specifications, with compatibility.

总之,本发明是一种灵活实用的功率资源分配与调整技术,其目的是以简单的结构和易实现的方法提高移动通信系统的容量和性能。 In summary, the present invention is a flexible and practical power adjustment techniques and resource allocation, which is the object of simple structure and easy implementation capacity and performance of the mobile communication system.

Claims (9)

1.一种用于码分多址(CDMA)移动通信系统反向链路考虑相互干扰的功率控制方法,基于包括系统中的通信设备、可用发射功率以及通信频段等的通信资源,针对由各通信资源的不同划分和组合而构成的通信信道,网络侧以系统基本信息和用户端的状态信息为决策依据,这些状态信息包括:噪声程度、干扰水平、用户的信道状况等,进而根据系统设计目标所规定的使系统资源利用效率和用户端获得的服务质量等指标最优化的准则,调整各个用户的功率。 The power control method of a mobile communication system to consider the mutual interference of the reverse link 1. A method for code division multiple access (CDMA), communication device based on a system, the available transmit power, and other communications band communication resources for each a communication channel different dividing and combining structure of a communication resource, the network side of the system's information and user status information of the basis for decision making, state information comprising: a level of noise, interference levels, user channel conditions, etc., and further depending on system design goals the system efficiency of resource use and end user specified quality of service indicators obtained optimization criteria, adjust the power of each user. 这一过程中,考虑了多用户间干扰的相互影响,根据各个用户的功率调整趋势及所引起的系统干扰变化趋势,依照一定的方法遵守功率控制指令或者保持当前功率不变,从而降低系统干扰水平和提高容量。 In this process, consider the interaction between the multi-user interference, according to the power adjustment of each user and the trend change of system interference caused by the power control command in accordance with the compliance method, or keep the current constant power constant, thereby reducing system interference level and increase capacity. 该方法的基本实现步骤为:步骤1:在每个外环功率控制周期开始时,网络侧根据反向接收数据是否正确解调设置外环功率控制设置点。 The basic steps of the method is realized: Step 1: At the beginning of each outer loop power control period, the network side receives the data correctly demodulated reverse outer loop power control set point is provided. 步骤2:在每个内环功率控制时刻,网络将接收信号的信噪比(SINR)与步骤1中设定的外环功率控制设置点相比之后确定内环功率控制命令。 Step 2: outer loop power in each inner loop power control timing, the received network signal to noise ratio (SINR) signal is set to 1 in step determines the control set point as compared to the inner loop power control command after. 若接收信号信噪比小于设置点,则内环功率控制命令指示终端提高发射功率,否则指示终端降低发射功率。 If the received signal SNR is less than the set point, then the inner loop power control command instructing the terminal to increase the transmission power, or instruct the terminal to reduce the transmission power. 步骤3:终端根据其他用户的干扰相关信息,并结合终端自身的内环功率控制命令依一定的方式确定终端最终采取的发射功率调整策略。 Step 3: The terminal user's interference to other information, in conjunction with the terminal's own inner loop power control commands on a certain way to determine transmit power of the terminal to take the final adjustment strategy. 步骤4:终端根据步骤3中确定的功率控制命令调整自身发射功率。 Step 4: The terminal determines in step 3 in the power control command to adjust its transmit power. 步骤5:若外环功率控制周期结束,则返回步骤1,否则返回步骤2。 Step 5: if the outer loop power control period ends, the process returns to step 1, otherwise it returns to step 2.
2.如权利要求1中所述的用于码分多址(CDMA)移动通信系统反向链路考虑相互干扰的功率控制方法,其特征在于:可用于除CDMA系统之外,其他具备相似的自干扰特征的系统中。 As claimed in claim 1 for code division multiple access (CDMA) interference power control method in a mobile communication system considering a reverse link, characterized in that: in addition to the CDMA system can be used, provided other similar interference from the system characteristics.
3.如权利要求1中所述的用于码分多址(CDMA)移动通信系统反向链路考虑相互干扰的功率控制方法,其特征在于:网络侧所依据的系统基本信息和终端的信道信息在这里包含了资源的分配处理和功率控制方法所依据的所有可能的信息,以及这些信息的产生和获取。 As claimed in claim 1 for code division multiple access (CDMA) interference power control method in a mobile communication system considering a reverse link, characterized in that: the network side of the channel is based on the basic information and terminal system information here includes all possible information processing and distribution resources of power control method is based, as well as generate and obtain such information.
4.如权利要求1中所述的用于码分多址(CDMA)移动通信系统反向链路考虑相互干扰的功率控制方法,其中,功率控制决策所依据的信息主要包括:系统状态的动态变化和用户端无线传播环境的信息等,前者包括系统带宽、背景噪声强度和系统干扰水平信息等,后者包括各用户端信道状况测量以及发射功率的测量和预测等。 Dynamic system states: 4. 1. The code division multiple access (CDMA) interference power control method in a mobile communication system as claimed in claim considering a reverse link, wherein the power control decisions based on the information mainly includes changes and the UE radio propagation environment information, the former including the system bandwidth, intensity and background noise interference level information systems, each of which comprises measuring the channel conditions the UE and other measured and predicted transmit power.
5.如权利要求1中所述的用于码分多址(CDMA)移动通信系统反向链路考虑相互干扰的功率控制方法,用户端的特征在于可以获取其他用户的干扰相关信息,并利用这些信息判断自身受到的干扰水平,进而根据判断结果采取某些方法调整功率,其中发射功率调整策略包括所有可能的功率调整方式。 As claimed in claim 1 for code division multiple access (CDMA) interference power control method in a mobile communication system requires consideration of a reverse link, wherein the UE can obtain the interference information to other users, and use of these Analyzing the interference level information by itself, and then to take some power adjusting method according to the determination result, wherein the transmit power adjustment policy includes all possible power adjustment mode.
6.如权利要求4中所述的用户端的特征,其具体实现中包括每个用户在进行功率控制时所利用的其他用户的干扰相关信息(例如功率控制命令)、这些信息的选择、获取和利用方式(例如概率方式)等。 6. The characteristics of the user terminal according to claim 4 in which the specific implementation of other users or interference information (e.g., power control commands) when performing power control for each user utilized to select the information, and acquisition use (e.g., a probability mode) and the like.
7.如权利要求5中所述的利用功率控制命令依概率方式进行的功率调整策略,其特征在于:当干扰相关信息表明一定比例门限值的功率控制命令为“升功率”时,若该用户自身的功率控制命令为“升功率”,则该用户以一定的概率升功率,否则保持当前发射功率,若该用户自身的功率控制命令为“降功率”,则该用户以一定的概率降功率,否则保持当前发射功率。 7. The use as claimed in claim 5 power adjustment strategy power control command in probability manner, characterized in that: when the interference information indicates that a certain percentage of the threshold value power control command is "increasing power", if the the user's own power control command "or power", then the user with a certain probability or power, or maintain the current transmission power, if the user's own power control command is "reduced power", then the user with a certain probability drop power, or maintain the current transmission power.
8.如权利要求5中所述的利用功率控制命令依概率方式进行的功率调整策略,其特征在于:当干扰相关信息表明一定比例门限的功率控制命令为“降功率”时,若该用户自身的功率控制命令为“升功率”,则该用户以一定的概率升功率,否则保持当前发射功率,若该用户自身的功率控制命令为“降功率”,则该用户以一定的概率降功率,否则保持当前发射功率。 8. The power adjustment using the power control command policy in probability in the manner claimed in claim 5, wherein: when the information indicates that a certain proportion of the interference threshold of power control commands is "power down", if the user's own power control command "or power", then the user with a certain probability or power, or maintain the current transmission power, if the user's own power control command is "reduced power", then the user with a certain probability reduced power, otherwise, keep the current transmit power.
9.如权利要求6和权利要求7中所述的属于利用功率控制命令依概率方式进行的功率调整策略所依赖的比例门限值以及各个概率值是可以根据不同的情况进行调整的。 Belonging to the power control command by using a probabilistic manner, a power adjustment strategy as claimed in claim 6 and claim 7 in dependence of the ratio of the threshold value and the respective probability values ​​can be adjusted according to different situations.
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CN101369833B (en) 2007-08-14 2012-08-22 佳能株式会社 A communication apparatus and a communication control method
US8412255B2 (en) 2007-09-20 2013-04-02 Qualcomm Incorporated Reverse link traffic power control
CN103220765A (en) * 2006-09-08 2013-07-24 高通股份有限公司 Serving sector interference broadcast and corresponding reverse link traffic power control
CN107534970A (en) * 2015-06-08 2018-01-02 华为技术有限公司 The method and apparatus that connectivity adjusts in cordless communication network

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US6529482B1 (en) 1999-06-30 2003-03-04 Qualcomm Inc. Method and apparatus for adjusting a signal-to-interference threshold in a closed loop power control communications system
CN1184764C (en) 2001-09-25 2005-01-12 华为技术有限公司 Backward external ring power control method in CDMA communication system
GB2396523B (en) 2002-12-17 2006-01-25 Motorola Inc Method and apparatus for power control for a transmitter in a cellular communication system

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CN103220765A (en) * 2006-09-08 2013-07-24 高通股份有限公司 Serving sector interference broadcast and corresponding reverse link traffic power control
CN101369833B (en) 2007-08-14 2012-08-22 佳能株式会社 A communication apparatus and a communication control method
US8412255B2 (en) 2007-09-20 2013-04-02 Qualcomm Incorporated Reverse link traffic power control
US8498661B2 (en) 2007-09-20 2013-07-30 Qualcomm Incorporated Reverse link traffic power control
CN101803225B (en) * 2007-09-20 2015-08-12 高通股份有限公司 Reverse link traffic power controls
CN107534970A (en) * 2015-06-08 2018-01-02 华为技术有限公司 The method and apparatus that connectivity adjusts in cordless communication network
US10477425B2 (en) 2015-06-08 2019-11-12 Huawei Technologies Co., Ltd. Method and apparatus for connectivity adjustment in a wireless communication network

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