WO2013113198A1 - 一种无线通信覆盖的方法及*** - Google Patents

一种无线通信覆盖的方法及*** Download PDF

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Publication number
WO2013113198A1
WO2013113198A1 PCT/CN2012/076210 CN2012076210W WO2013113198A1 WO 2013113198 A1 WO2013113198 A1 WO 2013113198A1 CN 2012076210 W CN2012076210 W CN 2012076210W WO 2013113198 A1 WO2013113198 A1 WO 2013113198A1
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Prior art keywords
received power
network side
super cell
cps
active set
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PCT/CN2012/076210
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English (en)
French (fr)
Inventor
陈继勋
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP12867324.1A priority Critical patent/EP2811773B1/en
Priority to JP2014555059A priority patent/JP6367716B2/ja
Publication of WO2013113198A1 publication Critical patent/WO2013113198A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/32Hierarchical cell structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and system for wireless communication coverage. Background technique
  • the user equipment when the user equipment (UE) moves at a speed of 350 km/h, it will face many problems:
  • the large Doppler frequency offset of the system will affect the quality of the service and the penetration of the vehicle body.
  • the increase of the loss puts forward higher requirements on the power consumption of the UE, and the high speed of the train makes the UE face frequent problems such as cell handover, selection and reselection.
  • High-speed mobile scenes such as high-speed railways have very short travel times in the coverage of each cell along the way because the UE moves at a very high speed compared to the normal scene.
  • the indoor coverage unit (BBU) + multiple radio remote unit (MRRU) network coverage is usually adopted to expand the coverage of the cell.
  • BBU indoor coverage unit
  • MRRU multiple radio remote unit
  • the uplink data of each part of the cell (Cell Portion, CP) sent by the remote radio unit (RRU) is merged, and then the baseband is combined. Processing; In the downlink processing, each RRU simply copies and delivers the data.
  • This coverage scheme is simple to implement, but the system efficiency is not high, and the overall performance of the system cannot be effectively improved. Summary of the invention
  • a method of wireless communication coverage comprising:
  • the network side configures the CP set for the UE according to the CP configuration of the super cell
  • the network side determines the CP activation set of the UE according to the received power of the UE on each CP.
  • the UE performs normal communication with the CP in the CP active set.
  • the network side configures the CP set for the UE as:
  • the CP set configured by the network side for the UE includes all CPs in the super cell.
  • the method further includes: before the determining, by the network, the CP activation set of the UE according to the received power of the UE on each CP, the method further includes:
  • the network side acquires the number of CPs in the CP set.
  • the CP active set is determined according to the received power of the UE on each CP.
  • the network side determines, according to the received power of the UE on each CP, that the CP activation set of the UE is:
  • the network side obtains the average received power of the single resource block (RB) of the UE on each CP according to the received power of the channel sounding reference signal (SRS) of the received UE on each CP;
  • RB single resource block
  • SRS channel sounding reference signal
  • the CP to which the smoothed value belongs belongs to the CP active set of the UE.
  • the method further includes:
  • the average received power of the single RB of the UE on each CP is obtained according to the received power of the physical uplink shared channel (PUSCH) of the received UE on each CP. .
  • PUSCH physical uplink shared channel
  • a system for wireless communication coverage includes: a network side and a UE; wherein, the network side is configured to: after the UE accesses the super cell, according to the CP configuration of the super cell, Configuring a CP set; and determining a CP active set of the UE according to the received power of the UE on each CP;
  • the UE is configured to perform normal communication with a CP in the active set.
  • the CP set specifically configured for the UE includes all CPs in the super cell.
  • the network side is further configured to acquire the number of CPs in the CP set, when
  • the determination of the CP active set is performed based on the received power of the UE on each CP.
  • the network side is specifically configured to obtain, according to the received power of the SRS of the UE on each CP, the average received power of the single RB of the UE on each CP, and obtain the maximum value of the average received power, according to the The maximum value is obtained by the UE on the reference receiving power of each CP.
  • the CP to which the smoothing value belongs belongs to the CP active set of the UE.
  • the network side is further configured to: when receiving the received power of the SRS of the UE on each CP, obtain the average receiving of the single RB of the UE on each CP according to the received power of the PUSCH of the received UE on each CP. power.
  • the method determines the CP activation set of the UE, and can solve the problem of handover caused by the mobility of the UE, expands the coverage capability of the single cell of the base station, and can fully utilize the radio resources. , to improve the purpose of resource reuse.
  • FIG. 1 is a schematic flowchart showing an implementation of a method for wireless communication coverage according to the present invention
  • FIG. 2 is a schematic flowchart of an implementation of a wireless communication coverage method according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic flowchart of a second embodiment of a wireless communication coverage method according to the present invention. detailed description
  • a super cell is composed of a plurality of conventional neighboring cells, and each conventional cell in the super cell is called a partial cell (Cdl Portion, CP).
  • Multiple CPs logically belong to the same cell and share common cell resources, such as cell ID (Cell ID, CellID), primary and secondary synchronization signals, Cell Reference Signal (CRS) / demodulation reference signal ( De Modulation Reference Signal, DMRS) / Channel Sounding Reference Signal (SRS) sequence, etc.
  • CRS Cell Reference Signal
  • DMRS De Modulation Reference Signal
  • SRS Channel Sounding Reference Signal
  • the evolved base station uses one base station to support multiple cells (the multiple cells form a super cell), and the multiple RRUs belonging to the same super cell adopt a back-to-back mode, and the antenna adopts a directional high-gain antenna, and the downlink transmission adopts an addition.
  • the delay mode solves the problem that the downlink demodulation performance fluctuates drastically when the vicinity of the pole (the overlap region of the two RRUs).
  • the power of the same UE received on each CP is different.
  • different CPs transmit the same power but the receiving power at the receiving end of the UE still differs. of.
  • the active CP that can communicate with the UE indicates that the receiving energy of the UE transmitting energy to the activated CP has a certain impact on the UE receiving performance. Therefore, it can be determined by a certain conditional activation set that the CP belonging to the active set can communicate with the UE in real time, and the CP belonging to the inactive set does not communicate with the UE.
  • the basic idea of the present invention is: when the UE accesses the super cell, the network side configures the CP set for the UE according to the CP configuration of the super cell; the network side determines the received power of the received UE on each CP.
  • FIG. 1 shows an implementation flow of a method for wireless communication coverage of the present invention. As shown in FIG. 1, the method includes the following steps:
  • Step 101 When the UE accesses the super cell, the network side configures the CP set for the UE according to the CP configuration of the super cell.
  • the CP set configured by the network side for the UE includes all CPs in the super cell.
  • Step 102 The network side determines, according to the received power of the UE on each CP, the CP activation set of the UE.
  • the method may further include: the network side acquiring the number of the CPs in the CP set, and determining the CPs of all the UEs in the super cell when the number of the CPs is 1.
  • the activation set is the same as the CP set, and when the number of the CPs is greater than 1, the step is performed;
  • the network side determines, according to the received power of the UE on each CP, that the CP activation set of the UE is:
  • the network side obtains an average received power of a single resource block (RB) of each UE on each CP according to the received power of the received SRS of the UE on each CP;
  • RB resource block
  • the CP to which the smoothed value belongs belongs to the CP in the CP active set of the UE.
  • the UE when the UE does not receive the received power of the SRS on each CP, the UE obtains the UE according to the received power of the Physical Uplink Shared Channel (PUSCH) of the received UE on each CP.
  • PUSCH Physical Uplink Shared Channel
  • Step 103 The UE performs normal communication with the CP in the CP active set.
  • the figure shows the implementation process of the method for the wireless communication coverage of the present invention. As shown in the figure, the first embodiment includes the following steps. :
  • Step 201 The UE initially accesses a super cell.
  • Step 202 The network side configures a CP set for the UE according to the CP configuration of the super cell.
  • N cp , indicating that the super cell is a single CP cell, and does not need to perform an active set judgment, and configures a CP active set of all UEs in the super cell as the CP set, and ends the current processing flow; Step 204, ⁇ ⁇
  • the network side obtains the average connection of the UE on a single RB on each CP according to the received power of the SRS or the PUSCH of the UE reported by the physical layer.
  • the received power p ⁇ of the SRS or the PUSCH is first converted into a linear value in the bandwidth occupied by the SRS or the PUSCH, and then averaged to obtain an average received power of the UE on a single RB on each CP, P Av UE ID , CP ID )
  • the received power of the SRS is preferentially utilized.
  • Step 205 Obtain a maximum value p (f7 ⁇ ) of the average received power on each CP from the average received power K UE ' D , CP ' D on the single RB of each UE on each CP, and then obtain the UE in each CP.
  • P Ref (UE ID , CP ID ) P Aver (UE ID , CP ID ) IP (UE ID )
  • Step 206 The network side obtains a smoothed value p ⁇ 7 D'C 7 ⁇ of the reference received power of the UE on each CP according to the reference received power and a preset smoothing factor;
  • Step 207 it is determined whether the smoothing value is less than a preset threshold of the CP active set of the UE, if not less than step 208, otherwise, step 209;
  • Step 208 when PReAUE 1D , CP 1D , f) > Thr cp , the cp belongs to the cp activation set of the UE , and the network side adds the CP to the CP activation set of the UE; where is the preset CP activation set Judging the threshold.
  • Step 209 When the UE ID , CP ID , f) ⁇ Th rcp , the cp does not belong to the cp activation set of the UE , and the network side further determines whether all the CPs in the CP set are determined, and if yes, ends the current process. Otherwise, go to step 207.
  • FIG. 3 is a schematic diagram of an implementation scenario of a second embodiment of a method for wireless communication coverage according to the present invention.
  • the UE is located on a high-speed train.
  • the second embodiment includes Steps:
  • Step 301 The UE accesses a super cell.
  • Step 302 At time t, when the network side determines that the CP included in the CP active set of the UE in the super cell is CP0 and CP1, the CP0 and the CP1 perform normal uplink and downlink services with the UE.
  • step 303 at t+1, the train continues to travel forward.
  • the network side determines that the CP included in the CP active set of the UE in the super cell is CP3 and CP4, the CP3 and the CP4 perform normal with the UE. Up and down business.
  • the network side may determine, in real time, which CPs are included in the CP activation set according to the method described in Embodiment 1, and update the CP activation set.
  • the system includes: a network side 41 and a UE 42;
  • the network side 41 is configured to configure a CP set for the UE 42 according to a CP configuration of the super cell after the UE 42 accesses the super cell, and according to the received UE 42 on each CP. Receive power, determining a CP active set of the UE 42; The UE 42 is configured to perform normal communication with a CP in the CP active set.
  • the network side 41, the CP set specifically configured for the UE 42 includes all CPs in the super cell.
  • the network side 41 is further configured to acquire the number of CPs in the CP set, and when the number of the CPs is 1, determine a CP active set of all UEs 42 in the super cell, and the The CP set is the same. When the number of the CPs is greater than 1, the determination of the CP active set is performed based on the received power of the UE 42 on each CP.
  • the network side 41 is specifically configured to receive the received power of the SRS of the UE 42 on each CP, and obtain the average received power of the single RB of the UE 42 on each CP; obtain the maximum value of the average received power, according to The maximum value is the reference received power of the UE 42 on each CP; according to the reference received power and a preset smoothing factor, a smoothed value of the reference received power of the UE 42 on each CP is obtained; When the threshold is greater than or equal to the preset CP activation set, the CP to which the smoothing value belongs belongs to the CP in the CP active set of the UE 42.
  • the network side 41 is further configured to: when the received power of the SRS of the UE 42 on each CP is not received, obtain the UE 42 on each CP according to the received power of the PUSCH of the UE 42 on each CP. The average received power of a single RB.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明提供了一种无线通信覆盖的方法及***,所述方法包括下述步骤:当UE接入到超级小区中,网络侧根据所述超级小区的CP配置,为UE配置CP集;网络侧根据接收到的UE在各个CP上的接收功率,确定所述UE的CP激活集;所述UE与所述CP激活集中的CP进行正常通信。本发明在UE接入超级小区后,确定所述UE的CP激活集,能够解决由于UE的移动性带来的切换等问题,扩大了基站单小区的覆盖能力,同时可以达到无线资源的充分利用,提高资源重复利用率的目的。

Description

一种无线通信覆盖的方法及*** 技术领域
本发明涉及无线通信技术领域., 尤其涉及一种无线通信覆盖的方法及 ***。 背景技术
才艮据国际铁路联盟 ( Union Internationale des Chemins de Fer, UIC ) 的 数据: 截止 2010年 3月, 全球投入使用的高铁里程数约为 1.34万公里。 在 建和计划建设的高铁里程约为 2.8万公里, 占市场总量的 68%。预计未来三 年内, 全球高速铁路总投资约为 2000亿美元, 其中无线通信***的总投资 将超过 80亿美元。 随着无线通信技术的快速发展, 高铁用户对高速率数据 业务的需求也会随之剧烈增长。 而目前的第三代(3rd Generation, 3G ) 网 络仅能提供较低的数据速率, 并不能满足未来高速铁路无线通信***的多 业务需求。 因此, 长期演进(Long-Term Evolution, LTE ) 高铁覆盖解决方 案会将成为运营商未来关注的焦点。
对于无线通信***而言, 当用户设备 ( User Equipment , UE )移动的速 度达到 350公里 /小时以后, 会面临诸多问题: ***较大的多普勒频偏会影 响业务的质量、车体穿透损耗的增大对 UE功耗都提出了较高的要求、列车 的高速使得 UE面临频繁的小区切换、选择与重选等问题。 高速铁路等高速 移动场景与普通场景相比, 由于 UE移动速度非常高,在沿途每个小区覆盖 范围内停留的时间都非常短。 而高速移动环境下, 由于链路质量的恶化, UE的小区驻留、 接入、 重选和切换等通信过程需要测量和信令交互的时间 会更长, 同时频繁的切换还会导致用户体验变差, 进而影响到***的整体 性能。 现有的解决方案中, 通常采用室内基带处理单元(Building Base band Unite, BBU ) +多个射频拉远单元 ( Multiple Radio Remote Unit, MRRU ) 的网络覆盖方式以扩大小区覆盖范围。 上行处理时, 在***进行基带处理 之前, 就将射频拉远单元( Remote Radio Unit, RRU )发送过来的每个部分 小区 (Cell Portion, CP ) 的上行数据进行合并, 合并完之后, 再进行基带 处理; 下行处理时, 各 RRU只是简单地将数据进行复制并下发。 这种覆盖 方案实现简单, 但***效率并不高, 也无法有效地提升***的整体性能。 发明内容
有鉴于此, 本发明的主要目的在于提供一种无线通信覆盖的方法及系 统, 能够解决由于 UE的移动性带来的切换等问题。
为达到上述目的, 本发明的技术方案是这样实现的:
一种无线通信覆盖的方法, 所述方法包括:
当 UE接入到超级小区中, 网络侧根据所述超级小区的 CP配置, 为 UE配置 CP集;
网络侧根据接收到的 UE在各个 CP上的接收功率,确定所述 UE的 CP 激活集;
所述 UE与所述 CP激活集中的 CP进行正常通信。
其中, 所述网络侧为 UE配置 CP集为:
网络侧为所述 UE配置的 CP集包括所述超级小区中所有的 CP。
进一步地, 所述网络侧根据接收到的 UE在各个 CP上的接收功率, 确 定所述 UE的 CP激活集之前, 所述方法还包括:
所述网络侧获取所述 CP集中 CP的个数, 当所述 CP的个数大于 1时, 根据接收到的 UE在各个 CP上的接收功率, 进行 CP激活集的确定。
其中, 所述网络侧根据接收到的 UE在各个 CP上的接收功率, 确定所 述 UE的 CP激活集为: 网络侧根据接收到的 UE在各个 CP上信道探测参考信号 ( SRS ) 的接 收功率, 得到 UE在各个 CP上单个资源块(RB ) 的平均接收功率;
获取所述平均接收功率的最大值,根据所述最大值得到所述 UE在各个 CP上的参考接收功率;
根据所述参考接收功率及预设的平滑因子,得到 UE在各个 CP上参考 接收功率的平滑值;
当所述平滑值大于或等于预设的 CP激活集判断门限值时,所述平滑值 所属的 CP属于所述 UE的 CP激活集。
进一步地, 所述方法还包括:
当所述网络侧未接收到 UE在各个 CP上 SRS的接收功率时 ,根据接收 到的 UE在各个 CP上物理上行共享信道( PUSCH )的接收功率得到 UE在 各个 CP上单个 RB的平均接收功率。
一种无线通信覆盖的***, 所述***包括: 网络侧和 UE; 其中, 所述网络侧, 用于在 UE接入到超级小区中后, 根据所述超级小区的 CP配置, 为所述 UE配置 CP集; 并根据接收到的所述 UE在各个 CP上的 接收功率, 确定所述 UE的 CP激活集;
所述 UE, 用于与所述激活集中的 CP进行正常通信。
其中, 所述网络侧, 具体用于为所述 UE配置的 CP集包括所述超级小 区中所有的 CP。
进一步地, 所述网络侧, 还用于获取所述 CP集中 CP的个数, 当所述
CP的个数大于 1时, 根据接收到的 UE在各个 CP上的接收功率, 进行 CP 激活集的确定。
其中,所述网络侧,具体用于根据接收到的 UE在各个 CP上 SRS的接 收功率, 得到 UE在各个 CP上单个 RB的平均接收功率; 获取所述平均接 收功率的最大值,根据所述最大值得到所述 UE在各个 CP上的参考接收功 率; 根据所述参考接收功率及预设的平滑因子, 得到 UE在各个 CP上参考 接收功率的平滑值; 当所述平滑值大于或等于预设的 CP激活集判断门限值 时, 所述平滑值所属的 CP属于所述 UE的 CP激活集。
进一步地,所述网络侧,还用于在未接收到 UE在各个 CP上 SRS的接 收功率时, 根据接收到的 UE在各个 CP上 PUSCH的接收功率得到 UE在 各个 CP上单个 RB的平均接收功率。
本发明在 UE接入超级小区后, 确定所述 UE的 CP激活集, 能够解决 由于 UE的移动性带来的切换等问题,扩大了基站单小区的覆盖能力, 同时 可以达到无线资源的充分利用, 提高资源的重复利用率的目的。 附图说明
图 1为本发明无线通信覆盖的方法的实现流程示意图;
图 2为本发明无线通信覆盖的方法实施例一的实现流程示意图; 图 3为本发明无线通信覆盖的方法实施例二的实现流程示意图; 图 4为本发明无线通信覆盖的***的结构示意图。 具体实施方式
超级小区 (Super Cell ) 由多个传统的相邻小区组成, 超级小区中各个 传统的小区称为部分小区 (Cdl Portion, CP )。 多个 CP在逻辑上属于同一 个小区, 共享共同的小区资源, 例如小区标识(Cell ID, CellID )、 主副同 步信号、 频序列小区参考信号 (Cell Reference Signal, CRS ) /解调参考信 号( De Modulation Reference Signal, DMRS ) /信道探测参考信号( Sounding Reference Signal, SRS )序列等。 不同的 CP之间不存在移动性的问题, 如 此,就将移动性问题演变成一个小区不同 CP之间的检测和调度问题。 Super Cell由多个 CP组成, 但多个 CP在逻辑上还是同一个小区, 不同的 CP之 间没有网络层的移动性管理问题, 相当于将一个集中式小区转化成分布式 小区。 原本多个小区各自覆盖的区域, 通过 Super Cell技术, 将这些区域转 换为覆盖子区域, 从而多个覆盖子区域合并为一个小区。 在高速移动的时 候, 小区之间的切换演变成为小区内的调度问题。
演进基站( eNB )采用一个基站支持多个小区(这多个小区再组成一个 超级小区), 分属于同一个超级小区的多个 RRU采用背靠背的方式, 天线 采用定向高增益天线, 下行发射采用加延时方式来解决在抱杆附近(两个 RRU的交叠区 ) 时下行解调性能剧烈波动的问题。
在超级小区中, 存在多个 CP, 每个 CP上接收到的同一个 UE的功率 是有差异的, 那么根据上行能量对称性, 不同 CP发送相同的功率但在 UE 接收端的接收功率还是有差异的。能够作为与 UE通信的激活 CP,表明 UE 对该激活 CP发送能量的接收能量对 UE接收性能的影响达到一定程度。 因 此, 可以通过一定条件的激活集判断, 确定属于激活集的 CP可以实时与该 UE进行通信, 而属于非激活集的 CP则不与该 UE进行通信。
本发明的基本思想为: 当 UE接入到超级小区中, 网络侧根据所述超级 小区的 CP配置, 为 UE配置 CP集; 网络侧根据接收到的 UE在各个 CP 上的接收功率, 确定所述 UE的 CP激活集; 所述 UE与所述 CP激活集中 的 CP进行正常通信。
为使本发明的目的、 技术方案和优点更加清楚明白, 以下举实施例并 参照附图, 对本发明进一步详细说明。
图 1示出了本发明无线通信覆盖的方法的实现流程, 如图 1所示, 所 述方法包括下述步驟:
步驟 101 , 当 UE接入到超级小区中, 网络侧根据所述超级小区的 CP 配置, 为 UE配置 CP集;
具体地, 当 UE接入到超级小区中后, 网络侧为所述 UE配置的 CP集 包括所述超级小区中所有的 CP。 步驟 102, 网络侧根据接收到的 UE在各个 CP上的接收功率, 确定所 述 UE的 CP激活集;
其中, 在本步驟之前, 所述方法还可以包括: 所述网络侧获取所述 CP 集中 CP的个数, 当所述 CP的个数为 1 时, 则确定所述超级小区中所有 UE的 CP激活集与所述 CP集相同, 当所述 CP的个数大于 1时, 执行本步 驟;
具体地, 所述网络侧根据接收到的 UE在各个 CP上的接收功率, 确定 所述 UE的 CP激活集为:
网络侧根据接收到的 UE在各个 CP上 SRS的接收功率,得到 UE在各 个 CP上单个资源块(RB ) 的平均接收功率;
获取所述平均接收功率的最大值,根据所述最大值得到所述 UE在各个 CP上的参考接收功率;
根据所述参考接收功率及预设的平滑因子,得到 UE在各个 CP上参考 接收功率的平滑值;
当所述平滑值大于或等于预设的 CP激活集判断门限值时,所述平滑值 所属的 CP属于所述 UE的 CP激活集中的 CP。
进一步地,当所述网络侧未接收到的 UE在各个 CP上 SRS的接收功率 时, 则根据接收到的 UE在各个 CP上物理上行共享信道( Physical Uplink Shared Channel, PUSCH ) 的接收功率得到 UE在各个 CP上单个 RB的平 均接收功率。
步驟 103 , 所述 UE与所述 CP激活集中的 CP进行正常通信; 图 示出了本发明无线通信覆盖的方法实施例一的实现流程, 如图 所示, 所述实施例一包括下述步驟:
步驟 201 , UE初始接入到一超级小区中;
步驟 202, 网络侧根据超级小区的 CP配置情况, 为 UE配置 CP集, 步驟 203, 网络侧判断Λ ^是否大于 1, 若是, 执行步驟 204, 否则当
Ncp = , 说明该超级小区为单 CP小区, 不需要进行激活集判断, 将所述超 级小区中所有 UE的 CP激活集均配置为所述 CP集, 结束当前处理流程; 步驟 204, ^ ^时, 网络侧根据物理层上报的 UE在各个 CP上 SRS 或 PUSCH的接收功率 , 得到所述 UE在各个 CP上单个 RB上的平均接
At功率
Figure imgf000008_0001
SRS或 PUSCH的接收功率 p^ , 在 SRS或 PUSCH所占带宽先转换成线性 值, 然后进行平均得到 UE在各个 CP上平均单个 RB上的平均接收功率 PAv UEID,CPID) 当同时接收到 PUSCH和 SRS的接收功率时, 则优先 利用 SRS的接收功率。
步驟 205,从 UE在各个 CP上单个 RB上的平均接收功率 KUE'D,CP'D 中得到各个 CP上的平均接收功率的最大值 p(f7^),然后得出 UE在各个 CP上参考接收功率 , CP∞);
具体为利用如下公式得到 ^ ^'c^):
PRef (UEID , CPID ) = PAver (UEID , CPID ) I P (UEID )
步驟 206, 网络侧根据所述参考接收功率及预设的平滑因子, 得到 UE 在各个 CP上参考接收功率的平滑值 p ^7 D'C7 ^ ;
具体利用如下公式得到 PR UE1D,CP1D,f):
PRef (UEID , CPID ,t) = (l- )xPRef (UEID , CPID ,t-l) + xPRef (UEID , CPID ) 上式中, "是上行接收功率平滑因子, P^^/D'C^ -1)为 t-i时刻的 平滑值。 步驟 207, 判断所述平滑值是否小于预设的所述 UE的 CP激活集的判 断门限值, 若不小于, 则执行步驟 208, 否则, 执行步驟 209;
步驟 208, 当 PReAUE1D , CP1D , f) > Thrcp , 该 cp属于该 UEcp激活集, 网络侧将所述 CP增加到所述 UE的 CP激活集中; 其中 为预设的 CP 激活集的判断门限值。
步驟 209, 当 UEID , CPID , f) < Thrcp , 则该 cp不属于该 UE的 cp激活 集, 网络侧进一步判断所述 CP集中的所有的 CP是否确定完毕, 若是, 则 结束当前流程, 否则执行步驟 207。
图 3 示出了本发明无线通信覆盖的方法实施例二的实现场景示意, 如 图 3所示, 所述实施例二中 UE位于高速行驶的火车上, 具体地, 所述实施 例二包括下述步驟:
步驟 301 , UE接入到一超级小区中;
步驟 302, 在 t时刻, 当网络侧判断出超级小区中所述 UE的 CP激活 集中包含的 CP为 CP0、 CP1 , 则 CP0和 CP1与所述 UE进行正常的上下行 业务;
步驟 303, t+1时刻, 火车继续向前行驶, 此时, 当网络侧判断出超级 小区中所述 UE的 CP激活集中包含的 CP为 CP3、 CP4, 则 CP3和 CP4与 所述 UE进行正常的上下行业务。
其中,网络侧可以按照实施例一中所述的方法实时地判断 CP激活集中 包含有哪些 CP, 并对所述 CP激活集进行更新。
图 4示出了本发明无线通信覆盖的***的结构, 如图 4所示, 所述系 统包括: 网络侧 41和 UE 42; 其中,
所述网络侧 41 , 用于在 UE 42接入到超级小区中后, 根据所述超级小 区的 CP配置, 为所述 UE 42配置 CP集; 并根据接收到的所述 UE 42在各 个 CP上的接收功率, 确定所述 UE 42的 CP激活集; 所述 UE 42 , 用于与所述 CP激活集中的 CP进行正常通信。 其中, 所述网络侧 41 , 具体用于为所述 UE 42配置的 CP集包括所述 超级小区中所有的 CP。
进一步地, 所述网络侧 41 , 还用于获取所述 CP集中 CP的个数, 当所 述 CP的个数为 1时, 则确定所述超级小区中所有 UE 42的 CP激活集与所 述 CP集相同, 当所述 CP的个数大于 1时, 根据接收到的 UE 42在各个 CP上的接收功率, 进行 CP激活集的确定。
其中, 所述网络侧 41 , 具体用于接收到的 UE 42在各个 CP上 SRS的 接收功率, 得到 UE 42在各个 CP上单个 RB的平均接收功率; 获取所述平 均接收功率的最大值,根据所述最大值得到所述 UE 42在各个 CP上的参考 接收功率; 根据所述参考接收功率及预设的平滑因子, 得到 UE 42在各个 CP上参考接收功率的平滑值; 当所述平滑值大于或等于预设的 CP激活集 判断门限值时, 则所述平滑值所属的 CP属于所述 UE 42的 CP激活集中的 CP。
进一步地,所述网络侧 41 ,还用于当未接收到 UE 42在各个 CP上 SRS 的接收功率时, 则根据接收到的 UE 42在各个 CP上 PUSCH的接收功率得 到 UE 42在各个 CP上单个 RB的平均接收功率。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种无线通信覆盖的方法, 其特征在于, 所述方法包括:
当用户设备 UE接入到超级小区中,网络侧根据所述超级小区的部分小 区 CP配置, 为 UE配置 CP集;
网络侧根据接收到的 UE在各个 CP上的接收功率,确定所述 UE的 CP 激活集;
所述 UE与所述 CP激活集中的 CP进行正常通信。
2、 根据权利要求 1所述的方法, 其特征在于, 所述网络侧为 UE配置 CP集为:
网络侧为所述 UE配置的 CP集包括所述超级小区中所有的 CP。
3、 根据权利要求 1所述的方法, 其特征在于, 所述网络侧根据接收到 的 UE在各个 CP上的接收功率, 确定所述 UE的 CP激活集之前, 所述方 法还包括:
所述网络侧获取所述 CP集中 CP的个数, 当所述 CP的个数大于 1时, 根据接收到的 UE在各个 CP上的接收功率, 进行 CP激活集的确定。
4、 根据权利要求 1所述的方法, 其特征在于, 所述网络侧根据接收到 的 UE在各个 CP上的接收功率, 确定所述 UE的 CP激活集为:
网络侧根据接收到的 UE在各个 CP上信道探测参考信号 SRS的接收功 率, 得到 UE在各个 CP上单个资源块 RB的平均接收功率;
获取所述平均接收功率的最大值,根据所述最大值得到所述 UE在各个
CP上的参考接收功率;
根据所述参考接收功率及预设的平滑因子,得到 UE在各个 CP上参考 接收功率的平滑值;
当所述平滑值大于或等于预设的 CP激活集判断门限值时,所述平滑值 所属的 CP属于所述 UE的 CP激活集。
5、 根据权利要求 4所述的方法, 其特征在于, 所述方法还包括: 当所述网络侧未接收到 UE在各个 CP上 SRS的接收功率时,根据接收 到的 UE在各个 CP上物理上行共享信道 PUSCH的接收功率得到 UE在各 个 CP上单个 RB的平均接收功率。
6、 一种无线通信覆盖的***, 其特征在于, 所述***包括: 网络侧和 UE; 其中,
所述网络侧, 用于在 UE接入到超级小区中后, 根据所述超级小区的 CP配置, 为所述 UE配置 CP集; 并根据接收到的所述 UE在各个 CP上的 接收功率, 确定所述 UE的 CP激活集;
所述 UE, 用于与所述激活集中的 CP进行正常通信。
7、 根据权利要求 6所述的***, 其特征在于, 所述网络侧, 具体用于 为所述 UE配置的 CP集包括所述超级小区中所有的 CP。
8、 根据权利要求 6所述的***, 其特征在于, 所述网络侧, 还用于获 取所述 CP集中 CP的个数, 当所述 CP的个数大于 1时,根据接收到的 UE 在各个 CP上的接收功率, 进行 CP激活集的确定。
9、 根据权利要求 6所述的***, 其特征在于, 所述网络侧, 具体用于 根据接收到的 UE在各个 CP上 SRS的接收功率, 得到 UE在各个 CP上单 个 RB的平均接收功率; 获取所述平均接收功率的最大值,根据所述最大值 得到所述 UE在各个 CP上的参考接收功率; 根据所述参考接收功率及预设 的平滑因子, 得到 UE在各个 CP上参考接收功率的平滑值; 当所述平滑值 大于或等于预设的 CP激活集判断门限值时, 所述平滑值所属的 CP属于所 述 UE的 CP激活集。
10、 根据权利要求 9所述的***, 其特征在于, 所述网络侧, 还用于 在未接收到 UE在各个 CP上 SRS的接收功率时,根据接收到的 UE在各个 CP上 PUSCH的接收功率得到 UE在各个 CP上单个 RB的平均接收功率。
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