CN102461243A - 无线系统中的上行链路反馈信道报告机制 - Google Patents
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Abstract
公开了一种上行链路反馈信道报告方法,用于使用主和次快速反馈信道从移动站向基站高效地报告信道质量、MIMO反馈和CQI类型的数据。所述报告方法周期性地报告常规信息并在被要求时报告非常规信息。
Description
相关申请的交叉引用
本申请根据35 U.S.C.119(e)要求2009年4月28日递交的题为"ADVANCED WIRELESS COMMUNICATION SYSTEMS AND TECHNIQUES"的美国临时专利申请号61/173,204的优先权。
技术领域
本申请涉及高级空中接口标准下的主和次快速反馈信道支持。
背景技术
IEEE 802.16是由电气和电子工程师协会(IEEE)发布的一组无线宽带标准。IEEE 802.16m被称为高级空中接口标准。在该标准下,存在两种类型的上行链路快速反馈信道:主快速反馈信道(PFBCH),支持高达6比特的信息;以及次快速反馈信道(SFBCH),支持高达24比特的信息。因此,SFBCH具有高达三倍于PFBCH之多的存储容量。取决于许多准则,PFBCH、SFBCH或者这两个快速反馈信道的可用性将变化。
在该新标准的情况下,需要定义一种用于高效地使用PFBCH和SFBCH信道来报告信道质量、多输入多输出(MIMO)反馈和信道质量指示符(CQI)类型的数据的方法。
附图说明
在通过参考结合附图所进行的以下详细说明,本文件变得更好地理解时,本文件的前述各方面以及许多所伴随的优点将变得更易于理解,其中,除非另外说明,否则贯穿各个视图,相同的附图标记指代相同的部分。
图1是示出根据一些实施例的在无线网络中采用的上行链路反馈信道报告方法的示意图;
图2是根据一些实施例的由图1的上行链路反馈信道报告方法使用的主和次快速反馈信道以及带宽请求信道的框图;
图3是示出根据一些实施例的由图1的上行链路反馈信道报告方法为了报告用于典型配置的信道质量和等级指示符而所需的比特数的图;
图4是示出根据一些实施例的由图1的上行链路反馈信道报告方法执行的联合编码(joint-coded)报告的表格;
图5是示出根据一些实施例的由图1的上行链路反馈信道报告方法进行的交错的信道质量和等级指示符报告的框图;
图6是示出根据一些实施例的由图1的上行链路反馈信道报告方法进行的事件驱动报告的示意图;
图7是示出根据一些实施例的由图1的上行链路反馈报告方法使用的主快速反馈信道中的反馈内容的表格;
图8是示出根据一些实施例的由图1的上行链路反馈报告方法进行的CQI和等级组合以及非常规信息到主快速反馈信道的映射的表格;
图9是示出根据一些实施例的由图1的上行链路反馈报告方法进行的对次快速反馈信道的使用的表格;以及
图10A-10D是示出根据一些实施例的由图1的上行链路反馈信道报告方法使用时分复用进行的短期和长期信息报告的框图。
具体实施方式
根据本文所述的实施例,公开了一种上行链路反馈信道报告方法,以用于使用主和次快速反馈信道来将信道质量、MIMO反馈和CQI类型的数据从移动站高效地报告到基站。在某些情况下,该方法也可以使用带宽请求信道进行这样的报告。
图1是根据一些实施例的上行链路反馈信道报告(UFCR)方法100的示意图。UFCR方法100是采用PFBCH 20、SFBCH 30或者这两个反馈信道来报告CQI信息、MIMO反馈和CQI类型的数据的灵活方案。
UFCR方法100执行多种上行链路任务,其中上行链路传送是从移动站60到基站70的那些。在图1中,移动站60被示出为膝上型计算机,但是移动站可以是无线蜂窝电话、个人数字助理或者其它用于与基站70进行通信的移动技术。基站70可以同时服务于多个移动站(未示出)。可选地,UFCR方法100可以采用带宽请求信道以及PFBCH和SFBCH来向基站70报告信息。
由UFCR方法100执行的操作被分成常规报告200和非常规报告300。常规报告200包括信道质量和等级指示符报告50。常规报告200包括诸如宽带CQI报告、平均CQI报告和指定CQI报告的CQI报告以及等级指示符报告。非常规报告300包括事件驱动报告52、带宽请求指示、频率分区(frequency partition)选择和缓冲器管理。在一些实施例中,常规信息200被周期性地报告,而非常规信息300在要求时被报告。在下面的段落中描述了UFCR方法100的功能。
图2是示出根据一些实施例的由UFCR方法100使用的信道的简单框图。主快速反馈信道(PFBCH)20具有6比特用于存储信息。次快速反馈信道(SFBCH)30以用于存储信息的多达24比特为特征,其中7比特是其最小大小。如在下面的段落中所描述的,这些信道被移动站60用来向基站70报告有关信道的相关信息。
CQI和RI报告50
为了高效地支持下行链路适配,需要若干调制和编码方案(MCS)水平(level)来高效地表示子信道的CQI。在一些情况下,为了该目的,16个MCS水平是足够的,因此使用MCS向基站报告CQI将占用4比特。另外,在高级空中接口标准(在本文中也称为802.16m)下支持多达8个多输入多输出(MIMO)流。等级指示符传达用于MIMO传送的流的数目。为了支持8个MIMO流,报告RI将占用3比特。图3是表示针对802.16m下的典型情况的CQI和RI报告要求的图。因此在典型情况下报告CQI 40和RI 50这两者将总共占用7比特。
然而,主快速反馈信道(PFBCH)20仅具有6比特。因此,对于典型的情况,单个PFBCH 20不足够用于CQI和RI这两者的同时报告。
UFCR方法100使用以下两种技术其中之一来减少CQI和RI报告的反馈开销:联合编码报告50A和交错报告50B。这两种技术都使得能够使用6比特的PFBCH来报告CQI 40和RI 50信息。这些技术在下文被描述。
联合编码CQI和RI报告50A
如上面提到的,为了一起报告CQI和RI,需要7比特,从而允许128种组合(27)。然而,UFCR方法100通过应用一定的规则来过滤掉不必要的CQI和RI组合。在一些实施例中,可允许的组合的数目N被保持在32与64之间,或者在6比特内。因此,在原始存在128种CQI和RI组合的情况下,将存在64种或更少,或者至少是原始数目的一半。N可以根据实际的考虑而变化。如在图4中的表格24中所示的,列出了指定频谱效率和映射到不同码字的N种组合。
在一些实施例中,UFCR方法100使用至少下面两个规则来从128种组合中消除不太可能的可能性。首先,UFCR方法100在等级大于1时避免使用重复编码。其次,UFCR方法100去除了具有相同频谱效率的大多数组合。对于具有相同频谱效率的组合,UFCR方法100或者留下使用具有较高等级的较低MCS的组合,或者留下具有较低等级的较高MCS。
交错CQI和RI报告50B
与联合编码CQI和RI报告50A相对照,可以在相同的反馈信道中使用时分复用(TDM)在不同的时间分离地反馈CQI和RI。图5是示出根据一些实施例的快速反馈信道中的交错CQI和RI报告50B的图。移动站60使用任一快速反馈信道(FBCH)向基站70报告CQI和预编码器矩阵指数(PMI)信息两者。
在一些实施例中,上行链路反馈信道报告方法100每帧都报告CQI,其中RI报告偶尔“穿插(puncture)”在CQI报告中。通常,不需要在每帧中报告CQI,因此RI信息的偶尔穿插不损坏CQI报告。在第n帧中,信道质量指数被保存在FBCH中。在第(n+1)帧中,等级指数通过穿插在CQI报告中而被保存在FBCH中。在第(n+2)、第(n+3)和第(n+4)帧中,CQI被保存在FBCH中。在第(n+5)帧中,等级指数再次通过穿插在CQI报告中而被保存。
以这种方式,等级指数报告可以穿插在原始的周期性信道质量指数报告中,并且RI可以以比CQI低的频率被反馈,这取决于情况。该示例示出原始在每帧中都进行CQI报告,但是该机制并不限于每帧报告,而是对任何周期性报告都起作用。交错的CQI和RI报告50B还在CQI在每两帧、三帧或更多帧中被报告一次的情况下或者即使当发生子帧水平的报告时也起作用。
事件驱动报告52
返回图1,UFCR方法100还执行事件驱动报告52。在一些实施例中,CQI和MIMO信息的报告是基于信道/通信量的变化而被事件驱动的。实际上,移动站60基于信道变化向基站70发送开始和停止通知。如果移动站60发现针对一定时间段信道没有变得高于预定阈值,则移动站发送通知给基站70,请求基站停止报告并释放其SFBCH分配。一旦信道变化增大到预定阈值以上,移动站就向基站发送另一通知,请求继续进行SFBCH分配和在该信道上的CQI报告。根据一些实施例,这些操作在图6中被示意性地示出。
由于通信量变化而发生的事件驱动报告52也可以由基站70来触发。为了支持在次反馈信道中的事件驱动报告52,在一些实施例中报告两种类型的状态。一种状态被定义为请求次反馈信道的重新分配,而另一状态被定义为请求其释放。存在其中UFCR方法100传送该两状态事件驱动通知的若干种方式。
一种方式是总是使用PFBCH 20,或者通过使用1比特或者通过保留两个码字(或序列)来传送该通知。在1比特的情况中,将报告两个状态,一个是请求次反馈信道的重新分配,而另一个是请求其释放(例如,0→重新分配SFBCH;1→释放SFBCH)。
作为另一种选择,UFCR方法100可以使用带宽请求信道(BRCH)22(图2)来传送事件驱动通知。在使用BRCH 22的情况下,使用单个比特来传达次快速反馈信道30的重新分配或释放(例如,0→重新分配SFBCH;1→释放SFBCH)。如果主快速反馈信道20未处于工作状态中(on),则也可以使用次快速反馈信道30来请求其自己的解除分配。
PFBCH的反馈内容和报告机制
PFBCH中的反馈内容
主快速反馈信道20被设计用于鲁棒的传送,载送多达6个信息比特。因此,PFBCH 20对于反馈宽带信道质量、MIMO信息和其它CQI相关的信息是高效的。在图7中,表格26示出根据一些实施例的由UFCR方法100进行的支持频率选择性调度(FSS)、部分频率重利用(FFR)以及多输入多输出(MIMO)方案的PFBCH 20中的反馈内容。
表格26示出,移动站60使用PFBCH 20来向基站70报告常规信息和非常规信息两者。诸如宽带CQI、平均CQI、指定CQI和RI的常规信息被周期性地报告。宽带CQI包括针对工作在下行链路分集模式的闭环(CL)和开环(OL)MIMO的整个频带上的平均CQI。平均CQI包括所选择的多个子带上的单个平均CQI度量。指定CQI包括针对由下行链路信令中的参数所指示的一定资源单元而指定的CQI度量。等级指示符是所有单用户MIMO方案的流的数目。
在一些实施例中,非常规信息在要求时被报告。非常规信息包括上面提到的事件驱动指示符、带宽请求指示符、频率分区选择(FPS)以及缓冲器管理。事件驱动指示符由移动站60发送以指示信道已变化超过预定阈值或者在预定时间段内没有发生高于该阈值的信道变化。使用带宽请求指示符54来请求上行链路带宽的增大或减小。[发明人:这是正确的吗?]移动站60发送频率分区选择56以通知基站70所报告的CQI的频率分区(仅下行链路分集模式)。移动站60发送缓冲器管理指示符58以向基站70指示HARQ软缓冲器的占用率状态。
是否使用PFBCH 20来报告窄带CQI和窄带MIMO反馈数据取决于MIMO方案的覆盖要求。如果一个特定MIMO方案需要95%的覆盖,那么在一些实施例中对于具有差的上行链路信道质量的用户来说可以使用PFBCH 20来传送窄带CQI和MIMO反馈。否则,UFCR方法100使用SFBCH 30来传送该信息,这节省了上行链路开销。
PFBCH中的报告机制
主快速反馈信道20通过反馈分配指派映射(A-MAP)信息元(IE)被半静态地分配给移动站60以根据预配置的报告频率来发送周期性CQI和RI反馈以及在被要求时发送非常规信息。在一些实施例中,UFCR方法100为每个移动站60仅分配一个PFBCH 20,以减少开销。如果需要PFBCH 20中的多个报告,则UFCR方法100使用时分复用来改进覆盖。
在PFBCH 20中按顺序来区分不同的内容。根据一些实施例,6比特有效负荷到这些内容的映射在图8的表格28中被描述。该表格中的前N个条目与图4的表格24一样。等级为1的条目被布置在开头,以使得用于下行链路分集模式的CQI报告可以重复使用相同的表格。最后10个条目指示上述报告信息,其中两个码字(53,54)指示优选的MIMO模式,两个码字(55,56)指示HARQ软缓冲器信息,1比特(57)是带宽请求指示符,4个码字(58-61)指示频率分区/重复使用信息,并且最后两个码字(62,63)指示事件驱动请求。因此,根据一些实施例,在图8的表格28中,常规信息(CQI和RI报告)以及非常规信息二者都被映射。
如果诸如事件驱动指示符(EDI)52、带宽请求指示符54、频率分区选择(FPS)56和缓冲器管理58的非常规信息和宽带CQI两者在被要求时在相同的PFBCH中被发送,则非常规信息报告紧接着CQI和RI报告而来。
如果在PFBCH 20中应用联合编码的CQI和RI报告,那么其信息比特长度可以被固定为6比特,但是取决于流的总数目,基站70将限制序列搜索范围以增强性能。
如果信道质量和等级指示符在PFBCH 20中被分离地传送,则信息比特的长度可以根据是CQI还是RI被报告而是可变的,并且当传送较少的信息比特时可以增强性能。在这种情况下,存在用以报告非常规信息的不同方式,如上所述。在一些实施例中,UFCR方法100使用与CQI报告相结合的单个比特指示CQI报告后紧接着是(supercede)非常规报告。非常规信息报告也可以通过顺序来区分。或者,在报告时,非常规信息可以与CQI或RI信息或者两者相结合。
例如,可以通过将2比特频率分区选择与4比特CQI报告、1比特事件驱动通知和/或1比特缓冲器管理相结合来报告2比特频率分区选择。1比特优选MIMO反馈可以通过与3比特等级指数报告结合在一起而被报告。
用于SFBCH的反馈内容和报告机制
SFBCH中的反馈内容
上行链路SFBCH 30载送窄带CQI和MIMO反馈信息。SFBCH 30中所载送的信息比特的数目的范围为从7到24(图2)。在一些实施例中,SFBCH 30中载送的比特的数目是自适应的。
根据一些实施例,要通过UFCH方法100使用SFBCH 30传送的反馈内容在图9的表格32中被描述。在借助于不同反馈格式的局部化(localized)排列模式的情况下,SFBCH 30支持频率选择性结构(FSS)和MIMO方案。可以在更长的时段上(长期)报告子带选择、RI和流指示符(SI),而可以更频繁地(短期)报告子带CQI、子带PMI。MIMO信息包括子带PMI、流指示符和等级指示符。
SFBCH中的报告机制
通过反馈分配IE,SFBCH 30被动态地分配给移动站60。在SFBCH 30中支持事件驱动/非周期性反馈报告,并且基站70将根据正从PFBCH 20或其它控制信道报告的事件驱动指示符而将SFBCH重新分配到移动站60或解除SFBCH到移动站60的分配。
窄带CQI表示
在一些实施例中,UFCR方法100使用最佳M反馈通过M个所选子带上的一个基础CQI(平均CQI,或ave_CQI)加上差分CQI(由diff_CQI给定)来表示子带的CQI。可以使用两种类型的差分CQI,一种在频域中而另一种在时域中。在频域差分CQI的情况下,可以使用2个比特来指示频谱效率改变(偏移)的[-1, 0, 1, 2]水平,如在表格28(图8)中所示。
频域差分
在频域中,首先获得子带的所选最佳M个CQI的平均CQI(ave_CQI)。然后,测量ave_CQI与最佳M个CQI中的每个之间的差分CQI(diff_CQI)。平均CQI是M个CQI的频谱效率的指数的平均值(需要向下取整到整数),并且差分CQI即diff_CQI是频谱效率从各个CQI到平均CQI的偏移。
因此,在M=3的情况下,将有子带的3个CQI测量结果CQI1、CQI2和CQI3。对这三个测量结果求平均以获得ave_CQI。然后,从平均CQI减去原始CQI测量结果中的每个以获得三个差分CQI值,如下所示:
diff_CQI1= |CQI1- ave_CQI|
diff_CQI2= |CQI2- ave_CQI|
diff_CQI3= |CQI3- ave_CQI|
然后由移动站60将这四个值ave_CQI、diff_CQI1、diff_CQI2和diff_CQI3报告给基站70。相对于仅仅传送子带的三个CQI测量结果CQI1、CQI2和CQI3来说这是优选的,因为如上面所解释的那样报告CQI测量结果每个占用4比特,总共12比特。然而,每个差分CQI仅使用2比特,因此报告ave_CQI、diff_CQI1、diff_CQI2和diff_CQI3占用10比特(4+2+2+2),节省了2比特。
时域差分
在一些实施例中,UFCR方法100在时域中以稍微不同的方式获得平均CQI。在时域中,在连续的帧中进行子带的多个CQI测量。因此,获得先前帧的CQI(给定为pre_CQI)。然后,获得当前帧和下一帧的CQI。不是针对每帧报告全部CQI值,而是使用先前的CQI即pre_CQI作为基线来计算差分CQI(diff_CQI)。使用2比特来指示频谱效率改变的[-2, -1, 0, 1]水平,如在表格28(图8)中所示。再者,使用差分CQI信息而不是多个4比特CQI测量结果节约了成本。
在一些实施例中,UFCR方法100基于如何报告平均CQI来确定是使用频域差分CQI还是时域差分CQI。如果平均CQI是与差分CQI一起被报告的,则只使用频域差分CQI。如果在不同的时间段中分离地报告了两个CQI测量结果,则紧接在平均CQI之后被报告的第一个差分CQI将是频域差分测量结果,而随后的差分CQI报告将是时域差分测量结果,也就是说,直到下一平均CQI报告发生为止。
SFBCH中的窄带CQI报告
SFBCH 30中的信道质量指数和等级指数组合与PFBCH 20中的相同,如在表格24(图4)中所述的。在一些实施例中,取决于最大的等级,CQI和RI联合报告的有效负荷比特是可变的。在一些实施例中,UFCR方法100使用表格24的不同的子表格来减少开销并增强性能。例如,对于为1的等级考虑4比特CQI-RI报告。如果等级小于或等于4,则可以使用5比特CQI-RI报告。在一些实施例中,如果等级大于4,则执行6比特CQI-RI报告。
另外,窄带CQI通过基础信道质量指示符即base_CQI和差分CQI即diff_CQI来表示。基础CQI可以是最小CQI、最大CQI或平均CQI。在一些实施例中,UFCR方法100提供用以报告CQI信息的两种方式。在第一种情况下,经由PFBCH 20报告基础CQI且经由SFBCH 30来报告差分CQI。在第二种情况下,base_CQI和diff_CQI两者都经由SFBCH 30来报告,但是可以以较低的频率报告base_CQI。
SFBCH中的反馈格式
在一些实施例中,UFCR方法100在一个SFBCH 30内使用时分复用来报告长期信息(子带选择、流指示符、平均CQI等)和短期信息。对于不同的MIMO模式提供不同的反馈格式以平衡在不同的报告时段中传送的比特。如下面所述的那样,UFCR方法100提供四种不同的反馈格式。图10A-10D根据一些实施例示意性地示出这些反馈格式。
第一反馈格式
在第一反馈格式下,UFCR方法100在每个报告时段中在一个SFBCH 30中将所有的信息内容一起反馈,其中信息比特的总数不超过24比特。图10A示出使用SFBCH 30来报告如在图8的表格32中所给出的信息内容。
第二反馈格式
在第二反馈格式下,UFCR方法100周期性地报告子带选择信息,例如每4个报告时段报告一次。每个报告时段将所有其它内容一起报告一次。图10B示出子带选择每4帧被报告一次。子带选择穿插在CQI和PMI报告中。
第三反馈格式
在第三反馈格式下,UFCR方法100每4个报告时段报告一次子带选择和平均CQI。在每个报告时段中将所有其它内容一起报告一次,如在图10C中所示的那样。子带选择和平均CQI报告将穿插在其它CQI报告中。在图10C中,“类型1差分(type 1 diff)”意味着频域差分,而“类型2差分(type 2 diff)”意味着时域差分。
第四反馈格式
在第四反馈格式下,UFCR方法100每4个报告时段报告一次子带选择和流指示符。在每个报告时段中将所有其它内容一起报告一次,如图10D中所示。子带选择和流指示符报告将穿插在其它CQI报告中。
在一些实施例中,当在基于最佳M的CQI报告中M较大时,分配多个次快速反馈信道以反馈PMI、差分CQI和SI信息。
在分配反馈信道资源时,可以通过下行链路信令来指示反馈格式以及MIMO反馈模式(或MIMO配置)。在使用反馈信道来报告时,移动站60可以知晓格式、要反馈什么类型的内容、总报告比特和报告频率。
反馈信道分配
在一些实施例中,取决于特定的MIMO模式,基站70以不同的方式分配反馈信道。如果移动站60仅工作在具有下行链路分集模式的MIMO方案中,则需要宽带CQI/MIMO报告并且仅分配PFBCH 20。
如果移动站60仅工作在具有下行链路局部化模式的MIMO方案中,那么UFCR方法100采取两种动作中的一个。在第一种情况下,基站70分配SFBCH 30(取决于用户的上行链路信道质量和要反馈的比特数,可以有多个信道),以便仅反馈窄带CQI和窄带MIMO信息。在这种情况下,基站70可以向移动站60分配一个PFBCH 20,其中以非常低的报告频率来支持事件驱动报告,其中在用户的SFBCH 30中报告其它的经要求的非常规信息。在这种情况下,在所分配的PFBCH 20中的报告将穿插在SFBCH 30报告中。在第二种情况下,如果用户具有非常差的上行链路信道质量,那么基站70将分配PFBCH 20以仅报告CQI/MIMO相关的数据。
另外,基站70在其向移动站分配了主反馈信道或次反馈信道之后在PFBCH 20和SFBCH 30两者中进行空检测(null detection)。因此,基站70可以知晓移动站60是否已成功地接收到分配信令。如果没有,则基站70将考虑重新发送该分配元素。
上行链路反馈信道报告方法100因此在主反馈信道中周期性地报告宽带CQI和MIMO反馈,并且在被要求时报告非常规信息,包括事件驱动指示符、频率分区选择等,并且使用顺序来区分信息内容。SFBCH 30中的事件驱动报告机制是基于信道/通信量变化并使用移动站60来触发由于信道变化而引起的事件驱动报告。UFCR方法100也在主反馈信道20和次反馈信道30两者中执行联合编码CQI和RI报告,以减少开销。SFBCH 30中的不同反馈内容在时分复用下的报告中可以共享相同的次快速反馈信道。UFCR方法100通过报告M个所选子带上的频域和时域差分CQI两者以及基础CQI来执行窄带CQI报告。PFBCH 20可以总是以低得多的报告频率处于工作状态中,以支持事件驱动机制和其它非常规信息报告。PFBCH 20中的该报告可以穿插在原始SFBCH 30报告中以减少开销。
虽然已针对有限数目的实施例对本申请做了说明,但是本领域技术人员将认识到根据其的大量修改和改变。意图是使所附的权利要求覆盖落在本发明的真实精神和范围内的所有这样的修改和改变。
Claims (20)
1.一种上行链路反馈信道报告方法,包括:
使用反馈信道向基站周期性地报告常规信息;以及
使用所述反馈信道在被要求时向所述基站报告非常规信息,其中所述非常规信息穿插在常规信息报告中。
2.根据权利要求1所述的上行链路反馈信道报告方法,使用反馈信道向基站周期性地报告常规信息进一步包括:
使用所述反馈信道向所述基站周期性地报告信道质量指示符和多输入多输出相关的反馈。
3.根据权利要求1所述的上行链路反馈信道报告方法,其中使用相同的反馈信道来报告所述常规信息和所述非常规信息两者。
4.根据权利要求1所述的上行链路反馈信道报告方法,使用反馈信道向基站周期性地报告常规信息进一步包括:
使用所述反馈信道向所述基站周期性地报告等级指示符和信道质量指示符信息两者,其中所述反馈信道是主快速反馈信道。
5.根据权利要求1所述的上行链路反馈信道报告方法,使用反馈信道向基站周期性地报告常规信息进一步包括:
使用所述反馈信道向所述基站周期性地报告等级指示符和信道质量指示符信息两者,其中所述反馈信道是次快速反馈信道。
6.根据权利要求1所述的上行链路反馈信道报告方法,使用反馈信道向基站周期性地报告常规信息进一步包括:
使用主快速反馈信道来向所述基站报告所述常规信息。
7.根据权利要求1所述的上行链路反馈信道报告方法,使用反馈信道向基站周期性地报告常规信息进一步包括:
使用次快速反馈信道来向所述基站报告所述常规信息。
8.根据权利要求1所述的上行链路反馈信道报告方法,还包括:
使用带宽请求信道来向所述基站报告所述非常规信息。
9.根据权利要求1所述的上行链路反馈信道报告方法,使用所述反馈信道在被要求时向所述基站报告非常规信息进一步包括:
报告事件驱动和带宽请求信息。
10.根据权利要求1所述的上行链路反馈信道报告方法,使用所述反馈信道在被要求时向所述基站报告非常规信息进一步包括:
报告频率分区信息和缓冲器管理信息。
11.根据权利要求1所述的上行链路反馈信道报告方法,进一步包括:
使用次快速反馈信道来向所述基站报告所述常规信息和所述非常规信息两者。
12.一种上行链路反馈信道报告方法,包括:
使用反馈信道向基站周期性地报告常规信息;以及
使用第二反馈信道在被要求时向所述基站报告非常规信息。
13.根据权利要求12所述的上行链路反馈信道报告方法,进一步包括:
使用联合编码操作排除信道质量和等级指示符的不太可能的组合,来向所述基站周期性地报告信道质量指示符和等级指示符信息两者。
14.根据权利要求13所述的上行链路反馈信道报告方法,进一步包括:
使用主快速反馈信道来报告所述联合编码的信道质量和等级指示符。
15.根据权利要求12所述的上行链路反馈信道报告方法,进一步包括:
通过交错向所述基站周期性地报告信道质量指示符和等级指示符信息两者,其中每隔预定数目的帧传送所述信道质量指示符一次,并且以低于所述信道质量指示符的频率传送所述等级指示符,其中等级指示符传送穿插在信道质量指示符传送中。
16.根据权利要求15所述的上行链路反馈信道报告方法,进一步包括:
使用主快速反馈信道来报告交错的信道质量和等级指示符。
17.根据权利要求12所述的上行链路反馈信道报告方法,进一步包括:
使用所述第二反馈信道向所述基站发送事件驱动指示符,其中所述指示符由于针对预定阈值和预定义时间段没有发生信道变化而被传送;
其中所述第二反馈信道被释放并且信道质量指示符报告结束。
18.根据权利要求12所述的上行链路反馈信道报告方法,进一步包括:
使用所述第二反馈信道向所述基站发送事件驱动指示符,其中所述指示符由于发生超过预定阈值的信道变化而被传送;
其中所述第二反馈信道被重新分配并且信道质量指示符报告继续进行。
19.根据权利要求12所述的上行链路反馈信道报告方法,使用第二反馈信道在被要求时向所述基站报告非常规信息进一步包括:
使用所述第二反馈信道在被要求时向所述基站报告频率分区选择。
20.根据权利要求12所述的上行链路反馈信道报告方法,使用第二反馈信道在被要求时向所述基站报告非常规信息进一步包括:
使用所述第二反馈信道在被要求时向所述基站报告优选的多输入多输出模式。
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2009
- 2009-11-10 US US12/615,629 patent/US8560696B2/en active Active
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CN105515624B (zh) * | 2015-11-27 | 2017-08-08 | 广东欧珀移动通信有限公司 | 信道状态信息的上报方法、装置和终端设备 |
CN108604944A (zh) * | 2016-03-11 | 2018-09-28 | 诺基亚技术有限公司 | 反馈信令管理 |
CN108604944B (zh) * | 2016-03-11 | 2021-09-14 | 诺基亚技术有限公司 | 反馈信令管理 |
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