CN103891159B - 用于异构网络(HetNet)中的关联偏置的方法和装置 - Google Patents
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Abstract
本文公开了用于在异构网络(HetNet)中移动装置的关联偏置的方法。方法包括移动装置接收来自HetNet中宏节点的协调集信息。协调集信息能够包括至少一个LPN的至少一个低功率节点(LPN)标识符。移动装置能够接收来自宏节点的应用指定的参考信号(RS)偏置的请求。移动装置能够应用指定的RS偏置到从在收到的协调集信息中具有LPN标识符的LPN收到的LPN RS推导的LPN RS测量。在带有指定RS偏置的LPN RS测量超过关联阈值时,移动装置能够将移动装置与LPN相关联。
Description
技术领域
本申请涉及通信技术,具体涉及异构网络(HetNet)。
背景技术
无线移动通信技术使用各种标准和协议在传送站与无线移动装置之间传送数据。一些无线装置使用经物理层与所需数字调制方案组合的正交频分复用(OFDM)进行通信。使用OFDM的标准和协议包括第三代合作伙伴项目(3GPP)长期演进(LTE)、行业组通常称为WiMAX(微波接入全球互操作性)的电气和电子工程师协会(IEEE) 802.16标准(例如,802.16e、802.16m)及行业组通常称为WiFi的IEEE 802.11标准。
在3GPP无线电接入网络(RAN) LTE系统中,传送站能够是演进通用地面无线电接入网络(E-UTRAN)节点B(通常也称为演进节点B、增强节点B、eNodeB或eNB)和无线电网络控制器(RNC)的组合,其与称为用户设备(UE)的无线移动装置进行通信。下行链路(DL)传送能够是从传送站(或eNodeB)到无线移动装置(或UE)的通信,并且上行链路(UL)传送能够是从无线移动装置到传送站的通信。
在异构网络中,也称为宏节点的传送站能够提供基本无线覆盖到小区中的移动装置。异构网络(HetNet)用于处理宏节点上由于移动装置的增大使用和功能而增大的业务负载。HetNet能够包括覆盖在低功率节点(微eNB、微微eNB、毫微微eNB或家庭eNB [HeNB])层上的规划的高功率宏节点(或宏eNB)层,低功率节点能够在宏节点的覆盖区域内以没那么良好规划或甚至完全无协调的方式部署。宏节点能够用于基本覆盖,并且低功率节点能够用于填充覆盖盲区以改进在热区中或在宏节点的覆盖区域之间边界的容量,并且改进建筑物结构阻止信号传送的室内覆盖。小区间干扰协调(ICIC)或增强ICIC (elCIC)可用于资源协调以降低在诸如宏节点和低功率节点等传送站(或节点)之间的干扰。在ICIC中,干扰节点(或攻击者节点)可放弃使用一些资源以便允许在受害节点或受害移动装置之间的控制和数据传送。
诸如宏节点和/或低功率节点(LPN)等传送站也能够与协调多点(CoMP)系统中的其它传送站编组在一起,其中,来自多个小区的传送站能够将信号传送到移动装置,以及接收来自移动装置的信号。
发明内容
按照本申请,提供一种用于在异构网络(HetNet)中移动装置的关联偏置的系统,包括:用于在所述移动装置接收来自在所述HetNet中宏节点的协调集信息的部件,其中所述协调集信息包括至少一个低功率节点(LPN)的至少一个LPN标识符;用于在所述移动装置接收来自所述宏节点的应用指定的参考信号(RS)偏置的请求的部件;用于在所述移动装置应用所述指定的RS偏置到LPN
RS测量的部件,所述LPN RS测量是由从具有所收到的协调集信息中的LPN标识符的LPN收到的LPN RS得出的;以及用于在带有所述指定RS偏置的所述LPN RS测量超过关联阈值时将所述移动装置与所述LPN相关联的部件。
按照本申请,提供一种在异构网络(HetNet)中的移动装置,包括:收发器,配置成接收来自所述HetNet中宏节点的协调集信息,并且接收来自所述宏节点的应用指定的参考信号(RS)偏置的请求,其中所述协调集信息包括与所述宏节点具有协调信令的至少一个低功率节点(LPN)的至少一个LPN标识符;以及处理模块,配置成在LPN具有收到的协调集信息中的LPN标识符时应用所述指定的RS偏置到LPN RS测量,并且在带有所述指定的RS偏置的所述LPN RS测量超过关联阈值时触发与所述LPN的关联。
按照本申请,提供一种具有包括至少一个低功率节点(LPN)的协调集的异构网络(HetNet)中的宏节点,包括:无线收发器,配置成将协调集信息传送到移动装置并且将应用指定的参考信号(RS)偏置到LPN RS测量的请求传送到所述HetNet中的所述移动装置,所述LPN RS测量是由从所述协调集中所述至少一个LPN收到的LPN RS得出的,其中所述协调集信息包括与所述宏节点具有协调信令的至少一个LPN的至少一个LPN标识符;以及回程链路收发器,配置成与所述至少一个LPN进行通信,并且在带有所述指定的RS偏置的LPN RS测量超过关联阈值时,将与所述移动装置的关联转移到所述协调集中所述至少一个LPN之一。
附图说明
结合通过示例一起示出本公开内容的特征的附图的以下详细描述,将明白本公开内容的特征和优点;以及其中:
图1根据示例示出包括多个协调集的异构网络(HetNet)的框图,每个协调集带有宏节点和使用范围扩展的低功率节点(LPN);
图2根据示例示出包括多个协调集的异构网络(HetNet)的框图,每个协调集带有宏节点和低功率节点(LPN)并且应用范围扩展到与宏节点在相同协调集中的LPN;
图3根据示例示出包括多个协调集的异构网络(HetNet)的框图,每个协调集带有宏节点和低功率节点(LPN)并且在相同协调集的宏节点与LPN之间的关联中应用范围扩展;
图4A根据示例示出带有非协作传送站的站点间协调多点(CoMP)系统的框图;
图4B根据示例示出带有低功率节点(LPN)的站点内协调多点(CoMP)系统的框图;
异构图6根据示例示出宏节点和移动装置的框图。
现在将参照所示示范实施例,并且在本文中将使用特定语言描述示范实施例。然而,要理解的是,并不因此而要限制本发明的范围。
具体实施方式
在公开和描述本发明之前,要理解的是,本发明不限于本文中公开的特定结构、过程步骤或材料,而是可扩展到如相关领域技术人员将认识到的其等效物。也应理解的是,本文中采用的术语只用于描述特定示例的目的,并且无意于限制。不同图形中的相同标号表示相同元素。流程图和过程中提供的数字提供用于清晰说明步骤和操作,并且不一定指示特定顺序或序列。
示例实施例
下面提供技术实施例的初始概述,并且随后在后面进一步详细描述特定技术实施例。此初始摘要旨在帮助读者更快地理解技术,并且无意于识别技术的关键特征或必要特征,也无意于限制所述主题的范围。
异构网络(HetNet)能够包括宏节点和至少一个低功率节点(LPN)。宏节点能够在协调集中与至少一个LPN编组在一起。宏节点能够为协调集中的LPN(或其它宏节点)提供小区间干扰协调(ICIC)、增强ICIC (elCIC)或协调多点(CoMP)传送。宏节点可不为协调集外的LPN或其它宏节点提供ICIC、eICIC或CoMP。与宏节点进行通信(或者在宏节点的覆盖区域内)的移动装置能够接收来自宏节点的协调集信息。协调集信息能够包括协调集中LPN的标识符,包括至少一个LPN的至少一个LPN标识符。
宏节点能够请求与宏节点进行通信的移动装置应用指定的参考信号(RS)偏置。宏节点遇到重业务负载时,宏节点可请求应用指定的RS偏置以尝试将业务卸载到HetNet内的LPN。移动装置可接收来自位于移动装置附近的LPN的参考信号,如小区特定参考信号(CRS)或信道状态信息参考信号(CSI-RS)。移动装置能够测量宏节点的RS的功率或质量,并且能够测量LPN的RS的功率或质量。RS测量能够包括参考信号接收功率(RSRP)、参考信号接收质量(RSRQ)或RSRP和RSRQ的组合。移动装置能够比较宏节点的RS测量和LPN的RS测量。移动装置可与带有更高功率质量RS测量的LPN或宏节点相关联。移动装置能够应用指定的RS偏置(或RS功率偏移或RS质量偏移)以有效地降低宏节点的RS测量,或者有效地提升LPN的RS测量,以便在偏置之前带有低功率或更差质量测量的一些LPN能够在偏置后显得具有比宏节点更高的功率或更佳的质量测量。通过应用指定的RS偏置,一些移动装置可从宏节点切换或卸载到显得比宏节点具有更高的功率或更佳的质量测量的LPN。由于指定的RS偏置的原因,LPN的范围得以扩展,并且更多移动装置与LPN重新关联而不是与宏节点保持关联。此外,由于指定的RS偏置的原因,宏节点能够减少与宏节点进行直接通信的移动装置,并且将移动装置卸载到LPN。表示LPN的LPN标识符在收到的协调集信息内时,移动装置可应用指定的RS偏置到LPN
RS测量。在带有指定RS偏置的LPN
RS测量超过关联阈值时,移动装置能够与LPN相关联。ICIC、elCIC或CoMP可应用到协调集内的节点以管理LPN的低功率条件,增强LPN的信号和/或降低来自其它节点和装置的干扰。用于LPN的LPN标识符不在收到的协调集信息内时,移动装置可忽略到LPN
RS测量的指定的RS偏置。如果LPN与宏节点不在相同协调集中,则对于管理LPN的低功率条件,增强LPN的信号和/或降低来自其它节点和装置的干扰,ICIC、eICIC或CoMP效率可更低。
下述内容提供示例的另外细节。图1示出带有第一高功率宏节点410A(或宏eNB)的异构网络(HetNet),宏节点410A与第一低功率节点420A(微eNB、微微eNB、毫微微eNB、家庭eNB [HeNB]、远程无线电头端[RRH]或中继节点)之间有第一回程通信链路418A。HetNet能够包括第二高功率宏节点410B(或宏eNB),宏节点410B与第二低功率节点420B(微eNB、微微eNB、毫微微eNB、家庭eNB [HeNB]、远程无线电头端[RRH]或中继节点)之间有第二回程通信链路418B。回程通信链路能够是有线、无线或光纤连接。回程通信链路可使用X2信令。回程通信链路能够用于在协调集中的宏节点与LPN之间应用干扰减轻或信号协调。HetNet能够用于优化性能,尤其是用于不等用户或业务分布的性能,并且改进小区每单位面积的频谱效率。HetNet也能够实现相当大改进的总容量和小区边缘性能。增强小区间干扰协调(elCIC)能够用于协调在HetNet中宏节点与低功率节点(LPN)之间的资源,并且降低干扰。通常,eICIC能够允许干扰节点相互协调传送功率和/或空间波束,以便允许到其对应移动装置的控制和数据传送。用于HetNet系统的增强偏置能够与诸如CoMP或eICIC等干扰减轻技术一起使用。
HetNet(和同类网络)能够包括宏节点410A和410B的常规(规划)放置以覆盖宏小区412A和412B,宏节点一般能够以高功率级别传送,例如,大约5瓦(W)到40 W。HetNet能够覆盖有低功率节点(LPN) 420A和420B,低功率节点可以实质上更低功率级别传送,如大约100毫瓦(mW)到2 W。在示例中,宏节点的可用传送功率可至少是低功率节点的可用传送功率的10倍。LPN能够在表示有高无线业务负载或大量活动传送无线装置的区域的热点或热区中使用。LPN能够在微小区、微微小区、毫微微小区和/或家庭网络中使用。微小区能够位于商场、酒店或交通中心中。微微小区能够位于小型到中型结构中,如办公室、购物商场、火车站、证券交易所或飞机上。毫微微小区能够位于诸如家庭或小企业等小型结构中。
在示例中,微小区能够具有小于2公里(km)的范围,并且微微小区能够具有在200米(m)内的范围。在另一示例中,毫微微小区能够支持多达16个活动移动装置,并且能够具有50 m内的范围。在示例中,LPN可相对于用于1个天线的1毫瓦(dBm),用于2个天线不到21 dBm,以及用于4个天线不到18 dBm,具有不到24分贝的功率。分贝(dB)是对数单位,指示物理量(通常为功率或强度)相对于指定或暗示的参考级别的比率。以分贝为单位的比率是两个功率量的比率以10为底数的对数的10倍。相对于1毫瓦(mW)的功率能够表示为dBm (dB(mW))。在另一示例中,HeNB可具有用于1个天线的不到20 dBm,用于2个天线不到17 dBm,以及用于4个天线不到14 dBm的功率。HeNB能够执行eNodeB的许多功能,但HeNB能够优化或设计用于家庭或办公室。RRH可在集中、协作或云无线电接入网络(C-RAN)中使用,其中,传送站(或eNodeB)功能能够在基带单元(BBU)处理池与带有连接BBU到RRU的光纤的远程无线电单元(RRU)或远程无线电头端(RRH)之间细分。中继节点可用于解码和转发或重复宏节点的信令。
LPN
420A或420B能够具有标准小区范围422A或422B(或内小区范围)或小区范围扩展424A或424B(或小区范围延伸、边缘小区范围或小区边缘范围)。由于移动装置与LPN的更靠近原因,LPN的标准小区范围内的移动装置可比在小区范围延伸内但在标准小区范围外的移动装置遇到来自宏节点和其它来源的更少干扰。标准小区覆盖或范围(或中心小区范围)能够表示在传送站附近空间中的区域(或地理区域),在该区域中,传送功率和信号能够是强大的,并且共信道干扰能够是极小的。小区范围扩展(CRE)能够是小区的边界附近的区域,其中,传送功率和信号比在标准小区中的信号更弱,并且共信道干扰能够更大得多。在示例中,通过请求在第一宏节点的覆盖区域内的移动装置执行偏置,如RS偏置,第一宏节点410A能够在第一LPN 420A和第二LPN节点中生成小区范围扩展。
LPN的小区范围扩展能够是由于宏节点请求的RS偏置的原因。RS偏置能够应用偏移到RS测量,允许信号强度弱于宏节点的LPN与移动装置相关联。在示例中,RS偏置能够具有大于0 dB到大约6 dB的范围。在另一示例中,RS偏置能够具有大于0 dB到大约16 dB的范围。
关联(或切换)偏置能够是实现非均匀异构网络部署中负载平衡的有效方式。负载平衡能够通过在LPN(低传送功率节点)的覆盖(或范围)扩展提供。范围扩展实际上能够通过将用于LPN的移动装置关联度量偏置某一值而实现,该值可经诸如无线电资源控制(RRC)信令等更高层从宏节点通过信号发送到移动装置。移动装置关联度量能够包括参考信号接收功率(RSRP)或参考信号接收质量(RSRQ)。负载平衡能够对位于范围扩展区中的移动装置造成严重的干扰条件。为提供用于此类移动装置的适当吞吐量性能,能够在宏节点(外层(overlay)高传送功率节点或攻击者节点)应用诸如DL eICIC或CoMP等干扰减轻方案。
关联能够指移动装置与宏节点或LPN等节点的直接无线通信。重新关联能够包括将移动装置的直接无线通信从一个节点转移到另一节点。重新关联中的两个节点均可协调集内,或者重新关联中的节点可以不同的协调集中。切换能够指移动装置的直接无线通信从第一协调集中的第一节点转移到第二协调集中的第二节点。
在示例中,关联偏置可不计及诸如协调集等干扰减轻方案参数。具体而言,在移动装置为LPN应用而不考虑LPN所属协调集的关联偏置能够降低诸如DL eICIC或CoMP等干扰减轻的效力。协调集(或簇)能够定义为经回程链路相互连接并执行协调的传送的节点集。
图1示出在移动装置430应用到第二协调集中第二LPN 420B的关联偏置,其中,移动装置与第一协调集中的第一宏节点410A关联(并且进行直接通信440A)。移动装置可接收来自第一宏节点的第一宏节点传送440A和来自第二LPN的第二LPN传送450B。在图1所示示例中,第一LPN 420A在带有第一宏节点的第一协调集中,并且第二LPN在带有第二宏节点420B的第二协调集中。两个协调集能够生成独立传送,执行独立协调,和/或执行来自相互的独立干扰减轻。在示例中,移动装置可最初位于第一宏节点的覆盖区域中,这能够指示移动装置接收来自第一宏节点的最强功率。经诸如RS偏置等关联偏置应用范围扩展后,移动装置能够驻留在第二LPN的范围扩展区中,第二LPN能够属于诸如第二协调集等另一协调集中。可为第二协调集执行用于移动装置的干扰减轻,而由于在第一协调集和第二协调集的独立协调决定原因,不可实现来自最强攻击者(第一宏节点)的干扰抑制。
LPN的关联偏置并且因此的范围扩展可应用到宏节点的协调集内的LPN而不应用关联偏置到宏节点的协调集外的LPN,以便在与LPN的重新关联后改进移动装置的性能。在一示例中,宏节点能够通知移动装置诸如RS偏置值等指定的关联偏置值和与宏节点属于相同协调集的LPN(在协调集信息中)。在移动装置,能够为属于宏节点的相同协调集(或协作集)的LPN的受限集应用范围扩展。受限集外的LPN不可接收范围扩展。
例如,图2示出第二移动装置430A为与第一宏节点410A在相同协调集中的第一LPN节点420A应用范围扩展424A,并且第一移动装置430B不为与第一宏节点在不同协调集中的第二LPN节点420B应用范围扩展(或保持标准范围422B)。第一移动装置可接收来自第一宏节点的第一宏节点到第一移动装置传送440A和来自第二LPN的第二LPN传送450B。第二移动装置可接收来自第一宏节点的第一宏节点到第二移动装置传送442A和来自第一LPN的第一LPN传送450A。第一移动装置和第二移动装置均能够接收用于与第一宏节点相关联的LPN(或其它节点)的协调集信息(用于第一协调集)。第一移动装置和第二移动装置能够接收应用指定的RS偏置的请求。请求能够包括指定的RS偏置值,或者移动装置能够应用在移动装置内存储的预确定的RS偏置值。例如,指定的RS偏置能够是要应用到RSRP测量的3 dB值。RSRP能够以dBm测量,并且能够具有-140 dBm到-44 dBm的范围。第一移动装置能够(通过测量)生成用于第一宏节点的第一RSRP为-80 dBm,并且生成用于第二LPN的第二RSRP为-82 dBm。由于第一RSRP具有比第二RSRP更高的值,因此,第一移动装置与第一宏节点相关联。第二移动装置能够(通过测量)生成用于第一宏节点的第三RSRP为-81 dBm,并且生成用于第一LPN的第四RSRP为-83 dBm。由于第三RSRP具有比第四RSRP更高的值,因此,第二移动装置与第一宏节点相关联。由于第一LPN是在与第一宏节点相同的协调集中,因此,指定的RS偏置能够应用到第一LPN。因此,RS偏置将明显(或实际的)第四RSRP值增大到-80dBm(-83 dBm RSRP测量加指定的RS偏置的3 dB偏移)。由于第四RSRP值现在大于第三RSRP的-81 dBm,因此,第二移动装置可通过将通信从第一宏节点转移到第一LPN而与第一LPN重新关联。
在示例中,由于第二LPN 420B在与第一宏节点410A不同的协调集中,因此,第一移动装置430B可不应用指定的RS偏置到第二LPN 420B。因此,用于第一宏节点的-80 dBm的第一RSRP值仍高于用于第二LPN的-82 dBm的第二RSRP值。因此,可不发生从第一宏节点到第二LPN的重新关联。如图3所示,第一移动装置可保持与第一宏装置的关联444A,并且第二LPN可具有标准范围(无范围扩展)。第二移动装置430A可通过范围扩展与第一LPN 420A重新关联454A。
在LTE网络中,UE能够对参考信号测量至少两个参数,包括参考信号接收功率(RSRP)和参考信号接收质量(RSRQ)。RSRP能够定义为在资源元素的功率分布(以[W]为单位)内的线性平均,而资源元素在考虑的测量频率带宽内携带小区特定参考信号(CRS)。对于RSRP确定,可使用CRS R0。如果移动装置能够可靠地检测到R1可用,则除R0外,R1可用于确定RSRP。用于RSRP的参考点可以是移动装置的天线连接器。RSRQ能够定义为比率N×RSRP/(E-UTRA载波RSSI),其中,N是演进通用地面无线电接入(E-UTRA)载波接收信号强度指示符(RSSI)测量带宽的资源块(RB)的数量。分子与分母中的测量能够在相同资源块集内进行。E-UTRA载波RSSI能够包括由UE从所有来源中在N个资源块内在测量带宽中,在包含用于天线端口0的参考符号的OFDM符号中观察到的总接收功率(以[W]为单位)的线性平均,来源包括共信道服务和非服务小区、相邻信道干扰和/或热噪声。用于RSRQ的参考点可以是UE的天线连接器。
关联偏置也能够在协调多点(CoMP)系统(也称为多eNodeB多输入多输出[MIMO])中用于改进干扰减轻。图4A示出站点间CoMP系统308的示例。CoMP系统能够示为周围有多个非协作传送站的多个协作传送站(带有粗线条轮廓)。在CoMP系统中,传送站能够编组在一起作为相邻小区中的协作传送站310A-C,其中,来自多个小区的协作传送站能够将信号传送到移动装置302以及接收来自移动装置的信号。每个传送站能够服务于多个小区(或扇区)320A-K、322A-K和324A-K。小区能够是传送站或者是传送站覆盖的地理传送区域或子区域(在总覆盖区域内)生成的逻辑定义,其能够包括定义诸如控制信道、参考信号和分量载波(CC)频率等用于小区的参数的特定小区标识(ID)。通过协调在多个小区之间的传送,能够降低来自其它小区的干扰,并且能够增大所需信号的接收功率。协作传送站能够协调来自/去往移动装置的信号的传送/接收。CoMP系统外的传送站能够是非协作传送站312D-K。每个CoMP系统的协作传送站能够包括在关联偏置中能够使用的协调集中。
在图4B所示站点内CoMP示例中,宏节点310A的LPN(或RRH)可位于不同的空间位置,并且CoMP协调可在单个宏内,类似于HetNet。宏节点的小区322A可进一步细分成子小区330、332和334。LPN(或RRH)380、382和384可传送和接收用于子小区的信号。LPN(或RRH)370和374可传送和接收用于小区320A和324A的信号。移动通信装置302能够在子小区边缘(或小区边缘)上,并且站点内CoMP协调能够发生在LPN(或RRH)之间。
下行链路(DL) CoMP传送能够分成两个类别:协调调度或协调波束形成(CS/CB或CS/CBF)及联合处理或联合传送(JP/JT)。通过CS/CB,给定子帧能够从一个小区传送到给定移动通信装置(UE),并且包括协调波束形成的调度在小区之间动态协调以便控制和/或降低在不同传送之间的干扰。为实现联合处理,能够由多个小区执行到移动通信装置(UE)的联合传送,其中,多个传送站使用相同时间和频率无线电资源和动态小区选择同时传送。两种方法能够用于联合传送:使用OFDM信号的软合并接收的非相干传送;以及在小区之间执行预编码以便在接收器实现同相合并的相干传送。通过协调和合并来自多个天线的信号,CoMP允许移动用户享用高带宽服务的一致性能和质量,而无论移动用户是靠近小区的中心还是在小区的外缘。
另一示例提供用于在异构网络中移动装置的关联偏置的方法。方法包括在移动装置接收来自HetNet中宏节点的协调集信息的操作,其中,协调集信息包括至少一个低功率节点(LPN)的至少一个LPN标识符。随后是在移动装置接收来自宏节点的应用指定的参考信号(RS)偏置的请求的操作。方法的下一操作能够是在移动装置应用指定的RS偏置到从在收到的协调集信息中具有LPN标识符的LPN收到的LPN RS中推导的LPN RS测量。方法还包括在带有指定RS偏置的LPN RS测量超过关联阈值时,将移动装置与LPN相关联。
将移动装置与LPN相关联能够包括在带有指定的RS偏置的LPN RS测量超过宏节点RS测量预确定量时,将移动装置与LPN相关联。预确定量能够包括降低在宏节点与LPN之间重新关联的可能性的容限或裕度,并且在RS测量(LPN RS测量或宏节点RS测量)中的波动小。预确定量能够降低在宏节点与LPN之间过度重新关联。移动装置能够测量来自LPN的LPN
RS以生成LPN RS测量。移动装置能够测量来自宏节点的宏节点RS以生成宏节点RS测量。协调集中至少一个LPN能够具有与协调集中宏节点的协调信令。在移动装置来自宏节点的应用指定的RS偏置的请求能够用于卸载在宏节点的业务。应用指定的RS偏置到LPN
RS测量的移动装置能够扩展用于移动装置的范围以便与LPN相关联。移动装置能够与LPN相关联,并且将重新关联请求从移动装置发送到宏节点以便与LPN相关联。重新关联请求指示宏节点将与移动装置的通信卸载到LPN。重新关联请求能够包括由移动装置进行的LPN
RS测量。移动装置能够与LPN相关联,并且将通信从宏节点转移到LPN。
图6示出HetNet中的示例节点和示例移动装置720。节点710能够包括宏节点(或宏eNB)或低功率节点(微eNB、微微eNB、毫微微eNB或HeNB)。节点能够包括无线收发器712和回程链路收发器714。节点的无线收发器能够配置成将协调集信息传送到移动装置,并且将应用指定的参考信号(RS)偏置到从协调集中至少一个LPN收到的LPN RS推导的LPN RS测量的请求传送到HetNet中的移动装置。协调集信息能够包括用于与宏节点具有协调信令的至少一个LPN的LPN标识符。节点的回程链路收发器能够配置成与至少一个LPN进行通信,并且在带有指定的RS偏置的LPN RS测量超过关联阈值时,将与移动装置的关联转移到协调集中至少一个LPN之一。
移动装置(或UE)720能够与宏节点(或宏eNodeB)或低功率节点(或微eNodeB、微微eNodeB、毫微微eNodeB或HeNB)进行通信。在示例中,宏节点的可用传送功率可至少是LPN的可用传送功率的10倍。
移动装置720能够包括收发器722和处理模块724。移动装置的收发器能够配置成接收来自HetNet中宏节点的协调集信息,并且接收来自宏节点的应用指定的RS偏置的请求。协调集信息能够包括与宏节点具有协调信令的至少一个LPN的至少一个LPN标识符。移动装置的处理模块能够配置成在LPN具有收到的协调集信息中的LPN标识符时应用指定的RS偏置到LPN RS测量,并且在带有指定的RS偏置的LPN RS测量超过关联阈值预确定量时触发与LPN的关联。预确定量能够具有0值。关联阈值能够基于宏节点RS测量。处理模块能够还配置成测量LPN RS以生成LPN RS测量和/或测量宏节点RS以生成宏节点RS测量。
在另一示例中,传送站能够与移动装置进行无线通信。本申请提供移动装置的示例,如用户设备(UE)、移动台(MS)、移动无线装置、移动通信装置、平板、手机或其它类型的移动无线装置。移动装置能够包括配置成与节点、宏节点、低功率节点(LPN)或诸如基站(BS)、演进节点B (eNB)等传送站、基带单元(BBU)、远程无线电头端(RRH)、远程无线电设备(RRE)、中继站(RS)、无线电设备(RE)或其它类型的无线宽域网(WWAN)接入点进行通信的一个或多个天线。移动装置能够配置成使用至少一个无线通信标准进行通信,包括3GPP
LTE、WiMAX、高速分组接入(HSPA)、蓝牙和WiFi。移动装置能够为每个无线通信标准使用单独天线或者为多个无线通信标准使用共享天线进行通信。移动装置能够在无线局域网(WLAN)、无线个人区域网(WPAN)和/或WWAN中进行通信。
本申请也提供能够用于移动装置的音频输入和输出的麦克风和一个或多个扬声器的示例。显示屏幕可以液晶显示器(LCD)屏幕或其它类型的显示屏幕,如有机发光二极管(OLED)显示器。显示屏幕能够配置为触摸屏。触摸屏可使用电容性、电阻性或另一类型的触摸屏技术。应用处理器和图形处理器能够耦合到内部存储器以提供处理和显示能力。非易失性存储器端口也能够用于为用户提供数据输入/输出选择。非易失性存储器端口也可用于扩展移动装置的存储器能力。键盘可与移动装置集成,或以无线方式连接到移动装置以提供另外的用户输入。也可使用触摸屏提供虚拟键盘。
各种技术或其某些方面或部分可采用在诸如软盘、CD-ROM、硬盘、非暂时性计算机可读存储媒体或任何其它机器可读存储媒体等有形媒体中实施的程序代码(即,指令)的形式,其中,在程序代码载入诸如计算机等机器中并由其执行时,机器变成用于实践各种技术的设备。就在可编程计算机上的程序代码执行而言,计算装置可包括处理器、处理器可读的存储媒体(包括易失性和/或非易失性存储器和/或存储元素)、至少一个输入装置和至少一个输出装置。易失性和非易失性存储器和/或存储元素可以是RAM、EPROM、闪存驱动器、光盘驱动器、磁性硬盘驱动器或用于存储电子数据的其它媒体。基站和移动装置也可包括收发器模块、计数器模块、处理模块和/或时钟模块或计时器模块。可实现或利用本文中所述各种技术的一个或多个程序可使用应用编程接口(API)、可再用控制及诸如此类。此类程序可以面向过程或对象的高级编程语言实现以便与计算机系统进行通信。然而,程序在需要时可以汇编或机器语言实现。任何情况下,语言可以是汇编或解释语言,并且与硬件实现组合。
应理解的是,在此规范中描述的许多功能单元已标示为模块以便更明确强调其实现独立性。例如,模块可实现为包括自定义VLSI电路或门阵列的硬件电路、诸如逻辑芯片、晶体管等现成的半导体或其它离散组件。模块也可在可编程硬件装置中实现,如现场可编程门阵列、可编程阵列逻辑、可编程逻辑装置或诸如此类。
模块也可在软件中实现以便由各种类型的处理器执行。可执行代码的相同模块例如可包括计算机指令的一个或多个物理或逻辑块,这些块例如可组织为对象、过程或功能。
不过,识别的模块的可执行文件无需物理上定位在一起,而是可包括在不同位置存储的全异指令,这些指令在以逻辑方式结合在一起时,包括模块并且实现用于模块的所述目的。
实际上,可执行代码的模块可以是单个指令或多个指令,并且甚至可在几个不同的代码段上,在不同的程序之间和跨几个存储器装置分布。类似地,操作数据可在本文中在模块内识别和示出,并且可以任何适合形式实施以及在任何适合类型的数据结构内组织。操作数据可收集为单个数据集,或者可在不同位置内分布,包括在不同存储装置内分布,并且可至少部分只作为在系统或网络上的电子信号存在。模块可以是无源或有源,包括用于执行所需功能的代理。
此说明书通篇对“示例”的引用指结合该示例描述的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,在此说明书通篇各个位置出现的“在示例中”短语不一定全部指同一实施例。
在本文中使用时,为方便起见,多个项目、结构元素、组成元素和/或材料可在共同列表中示出。然而,应将这些列表视为好象列表的每个成员被单独识别为单独和唯一的成员。因此,不应只基于在共同群组中的其表示而无反面的指示,将此类列表的单独成员视为相同列表的任何其它成员的事实等效物。另外,本发明的各种实施例和示例可在本文中与用于其各种组件的备选一起引用。要理解的是,此类实施例、示例和备选不得视为彼此的事实等效物,而是要视为本发明的单独和自主表示。
此外,描述的特性、结构或特征可在一个或多个实施例中以任何适合的方式组合。在下面的描述中,提供了诸如、布局、距离、网络示例的示例等许多特定的细节以提供本发明的实施例的详尽理解。然而,相关领域的技术人员将认识到,本发明可在不存在一个或多个特定细节的情况下实践,或者通过其它方法、组件、布局等实践。在其它实例中,熟知的结构、材料或操作未详细示出或描述,以免不混淆本发明的方面。
虽然上述示例说明了在一个或多个特定应用中本发明的原理,但本领域技术人员将明白的是,在未行使发明能力的情况下以及在不脱离本发明的原理和概念的情况下,能够在实现的形式、使用和细节上进行各种修改。相应地,除非受下述权利要求所限制,否则,无意限制本发明。
Claims (20)
1.一种用于在异构网络(HetNet)中移动装置的关联偏置的系统,包括:
用于在所述移动装置接收来自在所述HetNet中宏节点的协调集信息的部件,其中所述协调集信息包括至少一个低功率节点(LPN)的至少一个LPN标识符;
用于在所述移动装置接收来自所述宏节点的应用指定的参考信号(RS)偏置的请求的部件;
用于在所述移动装置应用所述指定的RS偏置到LPN
RS测量的部件,所述LPN RS测量是由从具有所收到的协调集信息中的LPN标识符的LPN收到的LPN RS得出的;以及
用于在带有所述指定RS偏置的所述LPN RS测量超过关联阈值时将所述移动装置与所述LPN相关联的部件。
2.如权利要求1所述的系统,其中所述LPN RS测量包括从由参考信号接收功率(RSRP)、参考信号接收质量(RSRQ)及其组合组成的群组中选择的测量。
3.如权利要求1所述的系统,其中所述指定的RS偏置具有大于0分贝(dB)到16 dB的范围。
4.如权利要求1所述的系统,其中用于将所述移动装置与所述LPN相关联的所述部件还包括用于在带有所述指定的RS偏置的所述LPN RS测量超过宏节点RS测量预确定量时将所述移动装置与所述LPN相关联的部件。
5.如权利要求4所述的系统,还包括在所述移动装置应用所述指定的RS偏置之前:
用于测量来自所述LPN的LPN RS以生成所述LPN RS测量的部件;以及
用于测量来自所述宏节点的宏节点RS以生成所述宏节点RS测量的部件。
6.如权利要求1所述的系统,其中协调集中至少一个LPN具有与所述协调集中所述宏节点的协调信令。
7.如权利要求1所述的系统,其中用于与所述LPN相关联的所述部件还包括用于将重新关联请求从所述移动装置发送到所述宏节点以便与所述LPN相关联的部件,其中所述重新关联请求指示所述宏节点将与所述移动装置的通信卸载到所述LPN。
8.如权利要求7所述的系统,其中所述重新关联请求包括由所述移动装置采取的LPN RS测量。
9.如权利要求1所述的系统,其中用于与所述LPN相关联的所述部件将通信从所述宏节点转移到所述LPN。
10.一种在异构网络(HetNet)中的移动装置,包括:
收发器,配置成接收来自所述HetNet中宏节点的协调集信息,并且接收来自所述宏节点的应用指定的参考信号(RS)偏置的请求,其中所述协调集信息包括与所述宏节点具有协调信令的至少一个低功率节点(LPN)的至少一个LPN标识符;以及
处理模块,配置成在LPN具有收到的协调集信息中的LPN标识符时应用所述指定的RS偏置到LPN RS测量,并且在带有所述指定的RS偏置的所述LPN RS测量超过关联阈值时触发与所述LPN的关联。
11.如权利要求10所述的移动装置,其中所述LPN RS测量包括从由参考信号接收功率(RSRP)、参考信号接收质量(RSRQ)及其组合组成的群组中选择的测量。
12.如权利要求10所述的移动装置,其中所述指定的RS偏置具有大于0分贝(dB)到16 dB的范围。
13.如权利要求10所述的移动装置,其中所述关联阈值是基于宏节点RS测量。
14.如权利要求13所述的移动装置,其中所述处理模块还配置成测量LPN RS以生成LPN RS测量并且测量宏节点RS以生成宏节点RS测量。
15.如权利要求10所述的移动装置,其中所述移动装置包括带有天线、触敏显示屏、扬声器、麦克风、图形处理器、应用处理器、内部存储器、非易失性存储器端口或其组合的用户设备。
16.一种具有包括至少一个低功率节点(LPN)的协调集的异构网络(HetNet)中的宏节点,包括:
无线收发器,配置成将协调集信息传送到移动装置并且将应用指定的参考信号(RS)偏置到LPN RS测量的请求传送到所述HetNet中的所述移动装置,所述LPN RS测量是由从所述协调集中所述至少一个LPN收到的LPN RS得出的,其中所述协调集信息包括与所述宏节点具有协调信令的至少一个LPN的至少一个LPN标识符;以及
回程链路收发器,配置成与所述至少一个LPN进行通信,并且在带有所述指定的RS偏置的LPN RS测量超过关联阈值时,将与所述移动装置的关联转移到所述协调集中所述至少一个LPN之一。
17.如权利要求16所述的宏节点,其中所述指定的RS偏置具有大于0分贝(dB)到16 dB的范围。
18.如权利要求16所述的宏节点,还包括配置用于在请求所述指定的RS偏置时为所述协调集中的所述节点实现增强小区间干扰协调(eICIC)、协调多点(CoMP)或其组合的处理模块。
19.如权利要求16所述的宏节点,其中所述协调信令包括经有线连接、无线连接或光纤连接的X2信令或回程链路信令。
20.如权利要求16所述的宏节点,其中所述宏节点包括宏演进节点B(宏eNB),并且所述LPN包括微eNB、微微eNB、毫微微eNB或家庭eNB (HeNB)。
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