CN103945446A - Novel carrier type wireless communication management method and auxiliary method - Google Patents
Novel carrier type wireless communication management method and auxiliary method Download PDFInfo
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Abstract
现有的基于新载波类型(NCT)进行无线通信管理仅单独地基于信道状态信息参考信号(CSI-RS),本发明提出了对新载波类型进行无线通信管理的方法以及辅助方法,其中,在用户设备中,其中,包括如下步骤:i)对该新载波类型的小区特定参考信号(CRS)进行测量(S44),获得第一测量值;ii)对该新载波类型的信道状态信息参考信号(CSI-RS)进行测量(S45),获得第二测量值;iii)结合所述第一测量值和所述第二测量值,获得该新载波类型的无线通信管理的测量结果(S46)。本发明的实施方式更有效地利用了参考信号,提高了无线通信管理的测量结果的准确性。
The existing wireless communication management based on the new carrier type (NCT) is only based on the channel state information reference signal (CSI-RS). The present invention proposes a method and an auxiliary method for wireless communication management of the new carrier type, wherein, In the user equipment, the following steps are included: i) measuring (S44) the cell-specific reference signal (CRS) of the new carrier type to obtain a first measurement value; ii) the channel state information reference signal of the new carrier type The (CSI-RS) performs measurement (S45) to obtain a second measurement value; iii) combining the first measurement value and the second measurement value to obtain a measurement result of wireless communication management of the new carrier type (S46). The embodiment of the present invention utilizes the reference signal more effectively, and improves the accuracy of the measurement result of the wireless communication management.
Description
技术领域technical field
本发明涉及无线通信,尤其涉及对新载波类型(New Carrier Type)进行无线通信管理。The invention relates to wireless communication, in particular to wireless communication management for a new carrier type (New Carrier Type).
背景技术Background technique
在LTE-A的版本11和版本12中,引入了一个新的工作项“新载波类型”(New Carrier Type,简称NCT)以增强频谱效率,一般来说,宏基站使用原有的载波来实现大的覆盖范围,而NCT基站/小区则使用新载波类型来实现高的数据吞吐率。这样能够实现对异构网的支持,节能并且提供对之前版本的用户设备的后向兼容性。传统的一些信道,例如CRS(小区特定参考信号)、PBCH(物理广播信道)、同步信道等信道都至少部分地从该新载波类型上去除,以提高频谱利用的效率,并且与版本11设计不同之处在于,这里新载波类型的设计不需要考虑传统UE的体验(即不需要考虑对传统UE的兼容)。目前,在NCT中讨论两种场景,被分别称为同步(SYNC)NCT和非同步(un-SYNC)NCT。图1示出了同步NCT的一种示意图,其中,传统载波小区(例如宏eNB所辖小区)和新类型载波小区(例如微型的NCT eNB所辖小区)的覆盖范围近似重合,并且传统载波和新类型载波在频段上也比较接近,例如是相邻连续的频段。图2示出了非同步NCT的一种示意图,其中,传统载波小区和新类型载波小区的覆盖范围不同,并且传统载波和新类型载波在频段上也可能相距较远。In Release 11 and Release 12 of LTE-A, a new work item "New Carrier Type" (NCT for short) was introduced to enhance spectral efficiency. Generally speaking, macro base stations use the original carrier to achieve Large coverage, while NCT base stations/cells use new carrier types to achieve high data throughput. In this way, support for heterogeneous networks can be realized, energy saving can be achieved, and backward compatibility to user equipment of previous versions can be provided. Some traditional channels, such as CRS (Cell Specific Reference Signal), PBCH (Physical Broadcast Channel), synchronization channel, etc., are at least partially removed from this new carrier type to improve the efficiency of spectrum utilization, and are different from the Release 11 design The advantage is that the design of the new carrier type does not need to consider the experience of the traditional UE (that is, it does not need to consider the compatibility with the traditional UE). Currently, two scenarios are discussed in NCT, referred to as synchronous (SYNC) NCT and non-synchronous (un-SYNC) NCT, respectively. Figure 1 shows a schematic diagram of a synchronous NCT, in which the coverage areas of a traditional carrier cell (such as a cell governed by a macro eNB) and a new type of carrier cell (such as a cell governed by a micro NCT eNB) approximately overlap, and the traditional carrier and The frequency bands of the new types of carriers are relatively close, for example, adjacent and continuous frequency bands. Fig. 2 shows a schematic diagram of an asynchronous NCT, where the traditional carrier cell and the new type carrier cell have different coverage areas, and the traditional carrier and the new type carrier may also be far apart in the frequency band.
在网络运作过程中,用户设备需要进行无线通信管理,例如针对服务小区进行无线链路监控(RLM),以及针对相邻小区进行无线资源管理(RRM)。在NCT中,用户设备也需要对服务NCT小区基站至该用户设备的无线链路进行监控,并且对相邻NCT小区至该用户设备的无线资源进行管理。为了进行无线通信管理,一种实现方法是,使用NCT小区发送的信道状态信息参考信号(CSI-RS)来进行测量。一些特定的CSI-RS端口,例如(基于TS36.211的)端口15和/或16被配置用于进行基于CSI-RS的RLM/RRM。这种方案的缺点在于,所测量的CSI-RS有效符号相对于传统的CRS符号来说少了很多,这会使得无线通信管理的测量结果与实际信道的链路质量有一定偏差。进行无线通信管理的另一种方法是使用上行信令,例如测距参考信号(SRS)。但是,这种方法与传统的RLM/RRM测量截然不同,需要重新定义和设计RLM/RRM测量的过程。此外,在使用SRS进行RLM/RRM测量时,在小区之间也必须进行一些协调。During network operation, the user equipment needs to perform radio communication management, such as radio link monitoring (RLM) for a serving cell and radio resource management (RRM) for neighboring cells. In NCT, the user equipment also needs to monitor the radio link from the base station of the serving NCT cell to the user equipment, and manage the radio resources from the adjacent NCT cell to the user equipment. In order to perform wireless communication management, one implementation method is to use a channel state information reference signal (CSI-RS) sent by the NCT cell to perform measurement. Some specific CSI-RS ports, eg (TS36.211 based) ports 15 and/or 16 are configured for CSI-RS based RLM/RRM. The disadvantage of this solution is that the measured CSI-RS effective symbols are much less than the traditional CRS symbols, which will cause a certain deviation between the measurement results of the wireless communication management and the link quality of the actual channel. Another method for wireless communication management is to use uplink signaling, such as ranging reference signal (SRS). However, this method is quite different from traditional RLM/RRM measurement, and the process of RLM/RRM measurement needs to be redefined and designed. Also, some coordination must be done between cells when using SRS for RLM/RRM measurements.
发明内容Contents of the invention
基于前述现有技术的缺点,在NCT领域中需要一种新的对NCT进行无线通信管理的方法。Based on the aforementioned shortcomings of the prior art, a new method for wireless communication management of NCT is needed in the field of NCT.
对于非同步NCT来说,PSS(主同步信号)和SSS(辅同步信号)被保留在NCT中,以保证用户设备的初始同步,且该PSS/SSS的位置将会改变以避开解调参考信号(DM-RS)。传统的小区特定参考信号以一种精简的形式被保留为精简的小区特定参考信号(Reduced-CRS),以进行时域和频域同步的跟踪。在一种实现方式下,精简的小区特定参考信号以5毫秒为周期,是一个子帧之内的1个参考信号端口(每个物理资源块包括版本8的CRS端口0以及版本8的CRS序列),而对于频域来说标准化尚未有所规定,它可以占用全频带,也可以占用部分频带。对于同步NCT来说,标准化尚未对PSS/SSS、CRS进行具体规定,但是较为肯定的是,NCT中CRS的传输不会像在传统载波中那么频繁,因此若同步NCT中配置了CRS,其CRS的配置方式也属于精简的小区特定参考信号的范畴。For non-synchronous NCT, PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal) are kept in NCT to ensure the initial synchronization of UE, and the position of the PSS/SSS will be changed to avoid the demodulation reference signal (DM-RS). The traditional CRS is retained in a reduced form as Reduced CRS (Reduced-CRS) for time and frequency domain synchronization tracking. In one implementation, the simplified cell-specific reference signal has a cycle of 5 milliseconds and is one reference signal port within a subframe (each physical resource block includes CRS port 0 of version 8 and CRS sequence of version 8 ), while standardization has not yet been specified for the frequency domain, which can occupy the entire frequency band or part of the frequency band. For synchronous NCT, the standardization has not specified PSS/SSS and CRS, but it is more certain that the transmission of CRS in NCT will not be as frequent as in traditional carriers. Therefore, if CRS is configured in synchronous NCT, its CRS The configuration method of also belongs to the category of simplified cell-specific reference signals.
由于已经配置了精简的CRS,那么没有必要将精简的CRS排除在RLM/RRM测量之外。本发明的发明构思在于:为了更有效地利用参考信号,并且提高无线通信管理的测量结果的准确性:同时测量精简的CRS和CSI-RS,并结合两者的测量值获得最终的测量结果。Since the reduced CRS is already configured, there is no need to exclude the reduced CRS from the RLM/RRM measurement. The inventive idea of the present invention is: in order to use reference signals more effectively and improve the accuracy of wireless communication management measurement results: simultaneously measure the simplified CRS and CSI-RS, and combine the two measurement values to obtain the final measurement result.
基于以上发明构思,根据本发明的第一个方面,提供了一种在用户设备中对新载波类型进行无线通信管理的方法,其中,包括如下步骤:Based on the above inventive concepts, according to a first aspect of the present invention, a method for wireless communication management of a new carrier type in a user equipment is provided, which includes the following steps:
i.对该新载波类型的小区特定参考信号进行测量,获得第一测量值;i. Measure the cell-specific reference signal of the new carrier type to obtain a first measurement value;
ii.对该新载波类型的信道状态信息参考信号进行测量,获得第二测量值;ii. Measure the channel state information reference signal of the new carrier type to obtain a second measurement value;
iii.结合所述第一测量值和所述第二测量值,获得该新载波类型的无线通信管理的测量结果。iii. Obtain a measurement result of wireless communication management of the new carrier type by combining the first measurement value and the second measurement value.
该方面的优点在于利用了更多的参考信号,提高了无线通信管理的测量结果的准确性。The advantage of this aspect is that more reference signals are used, which improves the accuracy of the measurement results of wireless communication management.
在一个优选的实施方式中,所述新载波类型的小区特定参考信号包括精简的小区特定参考信号。In a preferred embodiment, the cell-specific reference signal of the new carrier type includes a simplified cell-specific reference signal.
该实施方式提供了对NCT中的精简CRS的支持。This embodiment provides support for the simplified CRS in NCT.
在一个优选的实施方式中,所述步骤a中的该指令指示该用户设备对服务新载波类型小区的该新载波类型进行无线链路监控,所述步骤b和c中的该精简的小区特定参考信号的配置和该信道状态信息参考信号的配置为该服务新载波类型小区的精简的小区特定参考信号的配置和该信道状态信息参考信号的配置;和/或,In a preferred embodiment, the instruction in step a instructs the user equipment to perform radio link monitoring on the new carrier type serving the cell of the new carrier type, and the simplified cell-specific The configuration of the reference signal and the configuration of the channel state information reference signal are the configuration of the simplified cell-specific reference signal of the serving new carrier type cell and the configuration of the channel state information reference signal; and/or,
所述步骤a中的该指令指示该用户设备对相邻新载波类型小区的该新载波类型进行无线资源管理,所述步骤b和c中的该精简的小区特定参考信号的配置和该信道状态信息参考信号的配置为该相邻新载波类型小区的精简的小区特定参考信号的配置和该信道状态信息参考信号的配置。The instruction in the step a instructs the user equipment to perform radio resource management on the new carrier type of the adjacent new carrier type cell, the configuration of the simplified cell-specific reference signal and the channel state in the steps b and c The configuration of the information reference signal is the configuration of the simplified cell-specific reference signal of the adjacent new carrier type cell and the configuration of the channel state information reference signal.
该实施方式提供了对RLM和/或RRM的支持。This embodiment provides support for RLM and/or RRM.
在一个优选的实施方式中,在所述步骤i和ii之前,还包括如下步骤:In a preferred embodiment, before the steps i and ii, the following steps are also included:
a.接收来自基站的、指示该用户设备进行无线通信管理的指令,该指令指示该用户设备结合小区特定参考信号和信道状态信息参考信号的测量值;a. receiving an instruction from the base station instructing the user equipment to perform wireless communication management, the instruction instructing the user equipment to combine the measured values of the cell-specific reference signal and the channel state information reference signal;
b.接收来自基站的、该新载波类型的精简的小区特定参考信号的配置;b. receiving the configuration of the reduced cell-specific reference signal of the new carrier type from the base station;
c.接收来自基站的、该新载波类型的信道状态信息参考信号的配置。c. Receive the configuration of the channel state information reference signal of the new carrier type from the base station.
该实施方式中,基站能够对进行测量的精简的CRS和CSI-RS的配置进行设定,提高了无线通信管理的灵活性。In this embodiment, the base station can set configurations of simplified CRS and CSI-RS for measurement, which improves the flexibility of wireless communication management.
在一个优选的实施方式中,在所述步骤iii之前,还包括如下步骤:In a preferred embodiment, before the step iii, the following steps are also included:
d.获得用于结合所述第一测量值和所述第二测量值的结合方式。d. Obtaining a combination for combining said first measurement value and said second measurement value.
该实施方式中,基站能够对结合第一测量值和第二测量值的结合方式进行设定,提高了无线通信管理的灵活性。In this implementation manner, the base station can set the combination manner of combining the first measurement value and the second measurement value, which improves the flexibility of wireless communication management.
在一个优选的实施方式中,所述步骤d中包括如下任一项:In a preferred embodiment, the step d includes any of the following:
-获得该用户设备上所存储的该结合方式;- Obtain the combination method stored on the user equipment;
-接收来自基站的该结合方式;- receiving the combination from the base station;
-根据该新载波类型的小区特定参考信号和/或信道状态信息参考信号的配置,确定该结合方式。- Determine the combination method according to the configuration of the cell-specific reference signal and/or channel state information reference signal of the new carrier type.
该实施方式提供了确定结合方式的几种不同实现,其中,第一种实现最为简单;第二种实现可以向基站提供可配置的功能;而第三种能够考虑参考信号的配置,例如考虑CRS和CSI-RS各自的带宽来获得合适的结合方式,能够获得较好的测量结果。This embodiment provides several different implementations for determining the combination mode, among which the first implementation is the simplest; the second implementation can provide configurable functions for the base station; and the third implementation can consider the configuration of the reference signal, for example, considering the CRS A suitable combination method can be obtained by using the respective bandwidths of the CSI-RS and the CSI-RS, and better measurement results can be obtained.
在一个优选的实施方式中,所述基站包括该用户设备所属的宏基站或该用户设备所属的新载波类型基站。在该实施方式中,前述配置功能可以由宏基站或NCT基站来完成,具有较强的灵活性。In a preferred implementation manner, the base station includes a macro base station to which the user equipment belongs or a new carrier type base station to which the user equipment belongs. In this implementation manner, the foregoing configuration function can be completed by the macro base station or the NCT base station, which has strong flexibility.
在一个优选的实施方式中,该新载波类型的小区特定参考信号的配置包括该新载波类型的、精简的小区特定参考信号的带宽,该新载波类型的信道状态信息参考信号的配置包括CSI-RS子帧配置(ICSI-RS),所述结合方式包括该第一测量值和该第二测量值的加权比。该实施方式提供了更加具体的实现方式。In a preferred embodiment, the configuration of the cell-specific reference signal of the new carrier type includes the bandwidth of the simplified cell-specific reference signal of the new carrier type, and the configuration of the channel state information reference signal of the new carrier type includes CSI- RS subframe configuration ( ICSI-RS ), the combination method includes a weighted ratio of the first measurement value and the second measurement value. This embodiment provides a more specific implementation.
在一个进一步的实施方式中,所述用户设备通过来自所述基站的RRC层信令获得前述小区特定参考信号的配置、信道状态信息参考信号的配置和所述结合方式。该实施方式提供了高层信令来支持本发明的具体实现。In a further embodiment, the user equipment obtains the configuration of the cell-specific reference signal, the configuration of the channel state information reference signal, and the combination manner through RRC layer signaling from the base station. This embodiment provides high-level signaling to support the specific implementation of the present invention.
在本发明的另一个方面中,为了解决对精简的小区特定参考信号进行无线通信管理中,缺乏信令控制层面的技术问题,本发明还提供了一种在用户设备中对新载波类型进行无线通信管理的方法,其中,包括如下步骤:In another aspect of the present invention, in order to solve the technical problem of lack of signaling control layer in the wireless communication management of the simplified cell-specific reference signal, the present invention also provides a method for wirelessly implementing the new carrier type in the user equipment. A method for communication management, comprising the steps of:
-通过RRC信令接收来自基站的指令,该指令指示该用户设备针对所述新载波类型的、精简的小区特定参考信号进行无线通信管理;- receiving an instruction from the base station through RRC signaling, the instruction instructs the user equipment to perform wireless communication management for the simplified cell-specific reference signal of the new carrier type;
-根据该指令和该精简的小区特定参考信号的带宽,对所述新载波类型的精简的小区特定参考信号进行测量,获得第一测量值作为该新载波类型的无线通信管理的测量结果。- Measure the simplified cell-specific reference signal of the new carrier type according to the instruction and the bandwidth of the simplified cell-specific reference signal, and obtain a first measurement value as a measurement result of wireless communication management of the new carrier type.
该方面为对精简的小区特定参考信号的无线通信管理提供了RRC信令控制层面。This aspect provides an RRC signaling control plane for radio communication management of simplified cell-specific reference signals.
在一个进一步的实施方式中,在测量前,还包括如下任一步骤:In a further embodiment, before the measurement, any of the following steps is also included:
-通过RRC信令接收来自该基站的、所述新载波类型的精简的小区特定参考信号的带宽;或者,- receiving the bandwidth of the reduced cell-specific reference signal of the new carrier type from the base station through RRC signaling; or,
-获得该用户设备上所存储的、该精简的小区特定参考信号的固定的带宽。- Obtaining the fixed bandwidth of the reduced cell-specific reference signal stored on the user equipment.
在该实施方式中,对于第一个选项,能够提供基站可配置的功能,提高了无线通信管理的灵活性;而对于第二个选项来说,实现比较简单。In this embodiment, for the first option, configurable functions of the base station can be provided, which improves the flexibility of wireless communication management; and for the second option, the implementation is relatively simple.
在一个进一步的实施方式中,所述基站包括该用户设备所属的宏基站或该用户设备所属的新载波类型基站。在该实施方式中,控制信令层面的功能可以由宏基站或NCT基站来完成,具有较强的灵活性。In a further embodiment, the base station includes a macro base station to which the user equipment belongs or a new carrier type base station to which the user equipment belongs. In this embodiment, the functions of the control signaling layer can be completed by the macro base station or the NCT base station, which has strong flexibility.
在一个进一步的实施方式中,该指令指示该用户设备对来自服务新载波类型小区的所述新载波类型进行无线链路监控,该精简的小区特定参考信号的带宽为服务新载波类型小区的精简的小区特定参考信号的带宽;和/或In a further embodiment, the instruction instructs the user equipment to perform radio link monitoring on the new carrier type from the serving new carrier type cell, and the bandwidth of the reduced cell-specific reference signal is the reduced bandwidth of the serving new carrier type cell. The bandwidth of the cell-specific reference signal; and/or
该指令指示该用户设备对来自相邻新载波类型小区的所述新载波类型进行无线资源管理,该精简的小区特定参考信号的带宽为相邻新载波类型小区的精简的小区特定参考信号的带宽。The instruction instructs the user equipment to perform radio resource management on the new carrier type from an adjacent new carrier type cell, and the bandwidth of the simplified cell-specific reference signal is the bandwidth of the simplified cell-specific reference signal of the adjacent new carrier type cell .
该实施方式提供了对RLM和RRM的支持。This embodiment provides support for RLM and RRM.
相应地,在本发明的又一个方面中,提供了一种在基站中用于辅助用户设备对新载波类型进行无线通信管理的方法,其中,包括如下步骤:Correspondingly, in another aspect of the present invention, a method for assisting user equipment in wireless communication management of a new carrier type in a base station is provided, which includes the following steps:
-通过RRC信令向该用户设备发送指令,该指令指示用户设备针对所述新载波类型的、精简的小区特定参考信号进行无线通信管理;- sending an instruction to the user equipment through RRC signaling, the instruction instructing the user equipment to perform wireless communication management for the simplified cell-specific reference signal of the new carrier type;
其中,该指令指示该用户设备对所述新载波类型的精简的小区特定参考信号进行测量,获得第一测量值作为该新载波类型的无线通信管理的测量结果。Wherein, the instruction instructs the user equipment to measure the simplified cell-specific reference signal of the new carrier type, and obtain a first measurement value as a measurement result of the wireless communication management of the new carrier type.
附图说明Description of drawings
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本发明的其它特征、目的和优点将会变得更加明显:Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
图1是同步NCT的一种示意图;Fig. 1 is a kind of schematic diagram of synchronous NCT;
图2是非同步NCT的一种示意图;Fig. 2 is a kind of schematic diagram of asynchronous NCT;
图3是根据本发明的一个实施方式的方法流程图。Fig. 3 is a flowchart of a method according to one embodiment of the present invention.
具体实施方式Detailed ways
本发明提供了一种在用户设备中对新载波类型进行无线通信管理的方法,其中,包括如下步骤:The present invention provides a method for wireless communication management of a new carrier type in a user equipment, which includes the following steps:
i.对该新载波类型的小区特定参考信号进行测量,获得第一测量值;i. Measure the cell-specific reference signal of the new carrier type to obtain a first measurement value;
ii.对该新载波类型的信道状态信息参考信号进行测量,获得第二测量值;ii. Measure the channel state information reference signal of the new carrier type to obtain a second measurement value;
iii.结合所述第一测量值和所述第二测量值,获得该新载波类型的无线通信管理的测量结果。iii. Obtain a measurement result of wireless communication management of the new carrier type by combining the first measurement value and the second measurement value.
在一种具体的情况下,新载波类型是使用精简的小区特定参考信号(Reduced-CRS)。在用户设备看来,新载波类型小区(NCT小区)保留有PCID作为小区标识,并且是作为一个独立的小区而存在。在本发明的实施方式中,该精简的小区特定参考信号被作为用于RLM/RRM的参考信号之一。除此之外,由于精简的小区特定参考在时域和频域上分布都比较稀疏,为了弥补测量精度的不足,本发明还提出使用配置给用户设备UE的信道状态信息参考信号(CSI-RS)中的至少一个作为另一用于RLM/RRM的参考信号。专用且不重叠CSI-RS端口可以被配置给用户设备以进行RLM/RRM测量。可以理解,在实际系统中,用户设备UE能够被配置使用多个信道状态信息参考信号CSI-RS,其中有的用于CQI测量等其他用途,本发明主要关注的是将这多个CSI-RS中的一些CSI-RS与CRS结合进行RLM/RRM测量。而这多个CSI-RS中的其他CSI-RS的其他用途可能与本发明不甚相关,不再赘述。In a specific case, the new carrier type uses reduced cell-specific reference signals (Reduced-CRS). From the user equipment's point of view, a new carrier type cell (NCT cell) retains a PCID as a cell identifier and exists as an independent cell. In the embodiment of the present invention, the reduced cell-specific reference signal is used as one of the reference signals for RLM/RRM. In addition, since the simplified cell-specific references are sparsely distributed in the time domain and frequency domain, in order to make up for the lack of measurement accuracy, the present invention also proposes to use the channel state information reference signal (CSI-RS) configured for the user equipment UE ) as another reference signal for RLM/RRM. Dedicated and non-overlapping CSI-RS ports can be configured to user equipment for RLM/RRM measurements. It can be understood that in an actual system, the user equipment UE can be configured to use multiple channel state information reference signals CSI-RS, some of which are used for other purposes such as CQI measurement, and the main focus of the present invention is to use these multiple CSI-RS Some of the CSI-RS in , are combined with CRS for RLM/RRM measurements. However, other uses of other CSI-RSs among the multiple CSI-RSs may not be very relevant to the present invention, and will not be repeated here.
如图3所示,优选地,首先,在步骤S30中,用户设备UE所属的宏基站MeNB或者NCT基站(NCT小区的控制基站)向该用户设备UE发送进行无线通信管理的指令,其中,该指令指示该用户设备UE结合对该NCT的精简CRS的第一测量值和对NCT的CSI-RS的第二测量值,获得RLM/RRM的测量结果。优选地,该指令可以通过上层的用户设备特定的RRC信令发出。相应地,在步骤S40中,用户设备UE接收到该指令。As shown in FIG. 3, preferably, first, in step S30, the macro base station MeNB or the NCT base station (the control base station of the NCT cell) to which the user equipment UE belongs sends an instruction to perform wireless communication management to the user equipment UE, wherein the The instruction instructs the user equipment UE to combine the first measurement value of the simplified CRS of the NCT and the second measurement value of the CSI-RS of the NCT to obtain the measurement result of RLM/RRM. Preferably, the instruction can be sent through upper layer UE-specific RRC signaling. Correspondingly, in step S40, the user equipment UE receives the instruction.
优选地,在精简CRS可由基站设定的情况下,在步骤S31中,宏基站MeNB或者NCT基站向该用户设备UE发送该新载波类型的精简CRS的配置,例如带宽、发送周期等等。优选地,该配置可以通过上层的用户设备特定的RRC信令发出。相应地,在步骤S41中,用户设备UE接收到该精简CRS的配置。在一个替代的实施方式中,精简CRS的配置已经固定地保存在用户设备UE中,则该步骤S31和S41可以被省略。Preferably, in the case that the simplified CRS can be set by the base station, in step S31, the macro base station MeNB or the NCT base station sends the configuration of the simplified CRS of the new carrier type to the user equipment UE, such as bandwidth, transmission cycle, etc. Preferably, the configuration can be sent through upper layer UE-specific RRC signaling. Correspondingly, in step S41, the user equipment UE receives the configuration of the simplified CRS. In an alternative implementation manner, the configuration of the simplified CRS has already been fixedly stored in the user equipment UE, and the steps S31 and S41 can be omitted.
优选地,在CSI-RS可由基站设定的情况下,在步骤S32中,宏基站MeNB或者NCT基站向该用户设备UE发送该新载波类型的CSI-RS的配置,例如带宽、发送周期等等。具体的,该配置可以通过CSI-RS子帧配置信息(CSI-RS-SubframeConfig)来承载,用户设备UE可以根据所发送的CSI-RS-SubframeConfig信息,确定CSI-RS所在的天线端口以及发送周期。优选地,该配置可以通过上层的用户设备特定的RRC信令发出。相应地,在步骤S42中,用户设备UE接收到该CSI-RS的配置。CSI-RS子帧配置信息CSI-RS-SubframeConfig的具体定义可以参照TS 36.211规范,本发明在此不再赘述。在一个替代的实施方式中,用于进行RLM/RRM的CSI-RS的配置已经固定地保存在用户设备UE中,则该步骤S32和S42可以被省略。Preferably, in the case that the CSI-RS can be set by the base station, in step S32, the macro base station MeNB or the NCT base station sends the configuration of the CSI-RS of the new carrier type to the user equipment UE, such as bandwidth, transmission cycle, etc. . Specifically, this configuration can be carried by CSI-RS subframe configuration information (CSI-RS-SubframeConfig), and the user equipment UE can determine the antenna port where the CSI-RS is located and the transmission cycle according to the sent CSI-RS-SubframeConfig information . Preferably, the configuration can be sent through upper layer UE-specific RRC signaling. Correspondingly, in step S42, the user equipment UE receives the configuration of the CSI-RS. The specific definition of the CSI-RS subframe configuration information CSI-RS-SubframeConfig can refer to the TS 36.211 specification, and the present invention will not repeat it here. In an alternative implementation manner, the configuration of the CSI-RS used for RLM/RRM has been fixedly stored in the user equipment UE, and the steps S32 and S42 can be omitted.
值得注意的是,用户设备UE可以对其所属的NCT小区进行无线链路监控(RLM),或者对其相邻的NCT小区进行无线资源管理(RRM)。则以上由基站所发送给用户设备UE的指令可以是进行RLM,也可以是进行RRM;相应地,基站发送给用户设备UE的NCT的精简CRS和CSI-RS的配置可以是针对用户设备UE的服务NCT小区,也可以是针对用户设备UE的相邻NCT小区。It should be noted that the user equipment UE can perform radio link monitoring (RLM) on the NCT cell to which it belongs, or perform radio resource management (RRM) on its adjacent NCT cells. Then the above instruction sent by the base station to the user equipment UE may be to perform RLM or RRM; correspondingly, the configuration of the simplified CRS and CSI-RS of the NCT sent by the base station to the user equipment UE may be for the user equipment UE The serving NCT cell may also be a neighboring NCT cell for the user equipment UE.
优选地,用户设备UE结合精简CRS的第一测量值与CSI-RS的第二测量值的结合方式也可由基站所配置。在这种优选的实施方式下,在步骤S33中,宏基站MeNB或者NCT基站向该用户设备发送用于结合第一测量值和第二测量值的结合方式。基站所提供的结合方式也可以有多种实现:Preferably, the manner in which the user equipment UE combines the first measured value of the simplified CRS and the second measured value of the CSI-RS can also be configured by the base station. In this preferred implementation manner, in step S33, the macro base station MeNB or the NCT base station sends a combination manner for combining the first measurement value and the second measurement value to the user equipment. The combination methods provided by the base station can also have multiple implementations:
-该结合方式是固定的;或- the combination is fixed; or
-该结合方式是由基站根据该NCT的精简CRS和/或CSI-RS的配置,可变地确定的,更加具体的,基站可以根据下述情况来确定结合方式:- The combination method is variably determined by the base station according to the configuration of the simplified CRS and/or CSI-RS of the NCT. More specifically, the base station may determine the combination method according to the following conditions:
●根据精简CRS的带宽,例如,在带宽大于一定阈值时,精简CRS的第一测量值占较大比例;相反,CSI-RS的第二测量值占较大比例;●According to the bandwidth of the simplified CRS, for example, when the bandwidth is greater than a certain threshold, the first measurement value of the simplified CRS accounts for a larger proportion; on the contrary, the second measurement value of the CSI-RS accounts for a larger proportion;
●根据CSI-RS的端口数,例如,在端口数大于一定阈值时,CSI-RS的第二测量值占较大比例;相反,精简CRS的第一测量值占较大比例。● According to the number of ports of the CSI-RS, for example, when the number of ports is greater than a certain threshold, the second measurement value of the CSI-RS takes a larger proportion; on the contrary, the first measurement value of the simplified CRS takes a larger proportion.
●根据精简CRS的带宽和CSI-RS的端口数之间的比率。● According to the ratio between the bandwidth of the reduced CRS and the number of ports of the CSI-RS.
在一个具体的实现方式中,该结合方式是第一测量值和第二测量值进行加权的一个加权比率α。In a specific implementation manner, the combination manner is a weighted ratio α in which the first measurement value and the second measurement value are weighted.
优选地,该结合方式可以通过上层的用户设备特定的RRC信令发给用户设备。在步骤S43中,用户设备UE接收到这一结合方式。在一个替代的实施方式中,结合方式由用户设备UE自行确定,则该步骤S33和S43可以被省略。Preferably, the combination manner can be sent to the user equipment through upper layer user equipment specific RRC signaling. In step S43, the user equipment UE receives this combination method. In an alternative implementation manner, the combination manner is determined by the user equipment UE itself, and steps S33 and S43 can be omitted.
之后,用户设备UE进行RLM/RRM测量,以图2为例进行进一步说明。Afterwards, the user equipment UE performs RLM/RRM measurement, which will be further described by taking FIG. 2 as an example.
如图2所示,小区A、B、C是NCT小区,其中小区A的CSI-RS被配置为使用天线端口15进行RLM/RRM测量,小区B的CSI-RS使用天线端口16,小区C的CSI-RS使用天线端口17。令用户设备UE由小区B所服务,且小区A和C是用户设备UE的相邻小区。那么用户设备UE将对NCT小区B进行RLM,并对NCT小区A和C进行RRM。As shown in Figure 2, cells A, B, and C are NCT cells, where the CSI-RS of cell A is configured to use antenna port 15 for RLM/RRM measurement, the CSI-RS of cell B uses antenna port 16, and the CSI-RS of cell C is configured to use antenna port 15 for RLM/RRM measurement. CSI-RS uses antenna port 17. Let the user equipment UE be served by cell B, and cells A and C are neighboring cells of the user equipment UE. Then the user equipment UE will perform RLM on NCT cell B, and perform RRM on NCT cells A and C.
令宏基站MeNB或小区B的NCT基站已经与用户设备UE进行了前述的配置交互,即基站已经将小区A、B和C的CRS配置和CSI-RS配置通知了用户设备。或者,用户设备UE中固定地保存有小区A、B和C的CRS配置和CSI-RS配置。Let the macro base station MeNB or the NCT base station of cell B have performed the aforementioned configuration interaction with the user equipment UE, that is, the base station has notified the user equipment of the CRS configuration and CSI-RS configuration of cells A, B, and C. Or, the CRS configuration and the CSI-RS configuration of the cells A, B and C are fixedly stored in the user equipment UE.
在步骤S43中,用户设备UE根据该NCT的CRS的带宽和周期,对该NCT的CRS进行测量,获得第一测量值,记为YCRS。对CRS进行测量并获得测量值的方法是本领域的一般技术人员所熟知的,在此不再赘述。In step S43, the user equipment UE measures the CRS of the NCT according to the bandwidth and period of the CRS of the NCT, and obtains a first measurement value, denoted as Y CRS . The method of measuring CRS and obtaining the measured value is well known to those skilled in the art, and will not be repeated here.
在步骤S44中,用户设备UE根据该NCT的CSI-RS的带宽和周期,对该NCT的CSI-RS进行测量,获得第二测量值,记为YCSI。对CSI-RS进行测量并获得测量值的方法是本领域的一般技术人员所熟知的,在此不再赘述。In step S44, the user equipment UE measures the CSI-RS of the NCT according to the bandwidth and period of the CSI-RS of the NCT, and obtains a second measurement value, denoted as Y CSI . The method of measuring the CSI-RS and obtaining the measurement value is well known to those skilled in the art, and will not be repeated here.
在步骤S45中,用户设备UE结合第一测量值YCRS和第二测量值YCSI,获得该新载波类型的RLM的测量结果。其中,加权方式可以由基站所配置,或者固定地保存在用户设备UE之中,或者由用户设备UE类似于前述步骤S33中那样而灵活地根据该NCT的精简CRS和/或CSI-RS的配置而确定。In step S45, the user equipment UE combines the first measurement value Y CRS and the second measurement value Y CSI to obtain the measurement result of the RLM of the new carrier type. Wherein, the weighting method may be configured by the base station, or fixedly stored in the user equipment UE, or flexibly configured by the user equipment UE according to the simplified CRS and/or CSI-RS of the NCT similarly to the aforementioned step S33 And ok.
在一个实施方式中,结合方式为加权比率α。那么对小区B进行RLM的测量结果参考信号接收强度RSRP如下等式所定义:In one embodiment, the combination is a weighted ratio α. Then the RLM measurement result of the cell B is defined by the following equation with reference to the received signal strength RSRP:
类似地,用户设备UE可以对小区A和C进行RRM,令X和Z分别代表对小区A和C的测量值,则小区A和C的RRM的测量结果参考信号接收强度RSRP分别为:Similarly, the user equipment UE can perform RRM on the cells A and C, let X and Z represent the measurement values of the cells A and C respectively, then the measurement results of the RRM of the cells A and C, the reference signal received strength RSRP are respectively:
(2)(2)
在此,等式(1)和(2)中的测量结果是针对每个子帧的测量结果。如果需要例如类似于层3滤波器那样进一步在时域上对多个子帧的测量结果进行平均,那么用户设备UE可以对多个子帧的根据等式(1)和(2)所得测量结果进行平均。具体的方式是本领域的一般技术人员所熟知的,本说明书不再赘述。Here, the measurement results in equations (1) and (2) are measurement results for each subframe. If it is necessary to further average the measurement results of multiple subframes in the time domain, for example similar to the layer 3 filter, the user equipment UE can average the measurement results of multiple subframes according to equations (1) and (2) . The specific manner is well known to those skilled in the art, and will not be repeated in this specification.
在另一种实施方式中,用户设备仅使用精简的CRS进行RLM/RRM。用户设备UE仍旧使用CRS的天线端口0或者端口1作为用于RSRP和RSRQ测量的参考信号。因此,本发明的实施方式中,基站通过RRC信令向该用户设备UE发送指令,该指令指示用户设备针对NCT、精简CRS进行无线通信管理。其中,进行该配置的基站可以是该用户设备所属的宏基站,也可以是该用户设备所属的新载波类型基站。具体的,该指令可以通过RRC信令中的一个逻辑值来承载,例如该逻辑值为真时表示使用精简的CRS进行RLM/RRM,该逻辑值为假时表示不使用精简的CRS进行无线通信管理。In another embodiment, the user equipment only uses the reduced CRS to perform RLM/RRM. The user equipment UE still uses antenna port 0 or port 1 of the CRS as a reference signal for RSRP and RSRQ measurement. Therefore, in the embodiment of the present invention, the base station sends an instruction to the user equipment UE through RRC signaling, and the instruction instructs the user equipment to perform wireless communication management for NCT and simplified CRS. Wherein, the base station performing the configuration may be the macro base station to which the user equipment belongs, or may be a new carrier type base station to which the user equipment belongs. Specifically, the instruction can be carried by a logical value in the RRC signaling. For example, when the logical value is true, it means that the simplified CRS is used for RLM/RRM, and when the logical value is false, it means that the simplified CRS is not used for wireless communication. manage.
优选地,该用户设备所进行的无线通信管理可以是对来自服务NCT小区的NCT进行无线链路监控(RLM),也可以是对来自相邻NCT的NCT进行无线资源管理(RRM)。在这种情况下,两个逻辑值分别针对服务NCT小区和相邻NCT小区进行指令。值得注意的是,基站指示用户设备UE进行RLM和RRM的方式可以是不同的,例如对于RLM来说使用精简的CRS,而对于RRM来说不使用精简的CRS。Preferably, the wireless communication management performed by the user equipment may be performing radio link monitoring (RLM) on the NCT from the serving NCT cell, or performing radio resource management (RRM) on the NCTs from neighboring NCTs. In this case, two logic values are commanded for the serving NCT cell and the neighboring NCT cell respectively. It should be noted that the way the base station instructs the user equipment UE to perform RLM and RRM may be different, for example, the reduced CRS is used for RLM, but the reduced CRS is not used for RRM.
在接收到该指令后,用户设备UE根据该精简的CRS的带宽,对所述新载波类型的精简的小区特定参考信号进行测量,获得第一测量值作为该新载波类型的无线通信管理的测量结果。After receiving the instruction, the user equipment UE measures the simplified cell-specific reference signal of the new carrier type according to the bandwidth of the simplified CRS, and obtains the first measurement value as the measurement of the wireless communication management of the new carrier type result.
在一种情况下,该精简的CRS是固定的,例如固定地使用中间的6个物理资源块(PRB),该配置预先保存在用户设备之中,那么用户设备读取所保存的精简CRS配置,并在相应的子帧和带宽上对精简CRS进行测量。In one case, the simplified CRS is fixed, for example, the middle 6 physical resource blocks (PRBs) are fixedly used, and the configuration is pre-saved in the user equipment, then the user equipment reads the saved simplified CRS configuration , and measure the simplified CRS on the corresponding subframe and bandwidth.
优选地,精简CRS的带宽也是可配置的。在这种实施方式中,基站通过RRC信令向该用户设备发送NCT的精简CRS的带宽。在该用户设备所进行的无线通信管理是对来自服务NCT小区的NCT进行无线链路监控(RLM)的情况下,基站发送服务NCT小区的精简CRS的带宽。在该用户设备对来自相邻NCT小区的NCT进行无线资源管理(RRM)的情况下,基站分别发送每个相邻NCT小区的精简CRS的带宽。Preferably, the bandwidth of the reduced CRS is also configurable. In this embodiment, the base station sends the reduced CRS bandwidth of the NCT to the user equipment through RRC signaling. In the case that the radio communication management performed by the user equipment is performing radio link monitoring (RLM) on the NCT from the serving NCT cell, the base station sends the bandwidth of the simplified CRS of the serving NCT cell. In the case that the user equipment performs radio resource management (RRM) on the NCT from the neighboring NCT cells, the base station sends the bandwidth of the reduced CRS of each neighboring NCT cell respectively.
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互任意组合。It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
当然,本发明还可有其他多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成,所述程序可以存储于计算机可读存储介质中,如只读存储器、磁盘或光盘等。可选地,上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地,上述实施例中的各模块/单元可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。本发明不限制于任何特定形式的硬件和软件的结合。Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, and the like. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules. The present invention is not limited to any specific combination of hardware and software.
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