WO2012155597A1 - 一种移动性管理中的非连续接收方法及装置 - Google Patents
一种移动性管理中的非连续接收方法及装置 Download PDFInfo
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- WO2012155597A1 WO2012155597A1 PCT/CN2012/071715 CN2012071715W WO2012155597A1 WO 2012155597 A1 WO2012155597 A1 WO 2012155597A1 CN 2012071715 W CN2012071715 W CN 2012071715W WO 2012155597 A1 WO2012155597 A1 WO 2012155597A1
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- drx
- drx configuration
- neighboring cell
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- base station
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000005259 measurement Methods 0.000 claims abstract description 42
- 238000012986 modification Methods 0.000 claims abstract description 21
- 230000004048 modification Effects 0.000 claims abstract description 21
- 230000004913 activation Effects 0.000 claims description 24
- 230000001965 increasing effect Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 14
- 238000010295 mobile communication Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a discontinuous reception method and apparatus in mobility management.
- GSM Global System For Mobile Communication
- GPRS General Packet Radio Service
- UMTS Universal Mobile Telecommunications System
- Homogeneous Network Once a homogeneous network is deployed, the capacity of the network in a certain area is fixed. In order to meet the increasingly demanding data service needs, operators need to deploy more homogeneous network sites. On the one hand, it is expensive to deploy and maintain traditional homogeneous macro network sites. On the other hand, even if a large number of new sites are deployed on the original network. Once deployed, each site has a fixed network capacity and cannot adapt to the changes in service load and quality of service (QoS) in local areas of the network.
- QoS quality of service
- the 4th generation mobile communication deploys some low power nodes (LPNs) based on the original homogeneous network, including low power micro base stations (pico eNBs) and home base stations (HeNBs). /CSG/femto), relay nodes, etc.
- LPNs low power nodes
- These low-power nodes have macro cells covered by base stations (eNBs, NBs, etc.) that are uniformly deployed by traditional operators because of their relatively low transmission power.
- the cells covered by these low-power nodes may be collectively referred to as a micro cell or a small cell or a low-power node cell (LPN cell).
- the low-power node is deployed in a hotspot area, and the coverage of the hotspot area is increased.
- a low-power node hotspot coverage is shown.
- Low-power nodes can be deployed in hotspots flexibly according to the number of users, increase network capacity in hotspots, and reduce hotspots. The load of the area.
- the low-power node can also be deployed at the cell edge to enhance the coverage of the cell edge.
- FIG. 2 is a schematic diagram of the edge coverage of the low-power node cell, which can effectively enhance the coverage of the cell edge and improve the QoS of the cell edge user.
- low-power nodes can also be deployed indoors to enhance indoor coverage.
- Figure 3 shows a schematic diagram of indoor coverage of low-power nodes, which can effectively enhance indoor coverage, improve indoor QoS, and meet the large-volume demand of indoor users. At the same time, the load on the macro cell is reduced.
- low-power nodes can enhance cell coverage, increase network capacity, share macro cell load, and enhance service quality of specific users on the basis of traditional macro cells.
- low power nodes have much smaller cell coverage than traditional macro cells due to their low transmit power.
- the working frequency of the macro cell is the same as the operating frequency of the low-power node deployed in the coverage, and the switching area between the traditional macro cell, the macro cell and the low-power node cell
- the user equipment may cause handover failure and radio link failure between the macro cell and the LPN cell.
- the probability of RLF) increases, which may eventually cause the UE to drop calls, affecting the user experience and system performance.
- the handover area between the traditional macro cell, the macro cell and the low-power node cell The switching area is relatively small.
- the handover delay is likely to be caused, thereby reducing the system gain caused by low-power node deployment, especially for low-power nodes for macro cell edge coverage enhancement.
- the signal quality of the serving cell is already poor, and the delayed handover is likely to cause the handover to fail, which ultimately causes the UE to drop calls, affecting the user experience and system performance.
- the technical problem to be solved by the present invention is to provide a discontinuous reception method and apparatus for mobility management for improving mobile performance.
- the present invention provides a discontinuous reception method in mobility management, in which
- UE user equipment
- DRX discontinuous reception
- the method, wherein the determining that the preset DRX modification condition is met includes:
- OAM network management system
- the method, where the modifying the DRX configuration of the UE includes:
- the method, wherein the step of changing a DRX configuration of the UE comprises: reducing a DRX cycle of the UE;
- the DRX cycle of the UE is reduced, and the DRX activation time timer length of the DRX configuration is increased.
- the method, where the indication of the neighboring cell includes:
- PCI Physical cell identifier
- the method where the neighboring cell information carried by the measurement report comprises: a PCI of the neighboring cell;
- the method further includes:
- the UE reports the measurement report of the carried neighbor cell information to the base station in the inactive time of the DRX configuration before the modification.
- the method further includes:
- the UE After receiving the notification message of the modified DRX configuration sent by the base station, the UE follows the The modified DRX configuration of the base station monitors the physical downlink control channel (PDCCH).
- PDCH physical downlink control channel
- the method wherein the step of the UE listening to the PDCCH according to the modified DRX configuration of the base station includes:
- the UE monitors the PDCCH during an activation time of the changed DRX configuration
- the UE releases the DRX configuration and continuously monitors the PDCCH.
- the present invention also provides a discontinuous receiving apparatus in mobility management, comprising a discontinuous reception (DRX) configuration unit and an information receiving unit in a base station,
- DRX discontinuous reception
- the information receiving unit is configured to receive an indication of a neighboring cell reported by the user equipment (UE), or a measurement report of the neighboring cell information reported by the UE;
- the DRX configuration unit is configured to tamper with the UE's DRX configuration and notify the UE when it is determined that the preset DRX modification condition is met.
- the device where the DRX configuration unit is configured to determine that the preset DRX modification condition is met as follows:
- the DRX modification conditions
- the device where the DRX configuration unit is configured to tamper with the DRX configuration of the UE in the following manner:
- the device where the DRX configuration unit is configured to change the DRX configuration of the UE in the following manner:
- the invention also provides a discontinuous receiving device in mobility management, which comprises a user equipment
- the DRX configuration receiving unit is configured to receive a notification message of the modified DRX configuration sent by the base station;
- the PDDCH monitoring unit is configured to monitor a physical downlink control channel (PDCCH) according to the received DRX configuration modified by the base station.
- PDCCH physical downlink control channel
- the notification message of the modified DRX configuration received by the DRX configuration receiving unit includes: a modified DRX configuration, or an indication of deleting a DRX configuration;
- the PDDCH monitoring unit is configured to monitor the PDCCH according to the received DRX configuration modified by the base station as follows:
- the PDCCH is monitored during the activation time of the modified DRX configuration; or the DRX configuration is released, and the PDCCH is continuously monitored.
- the method and apparatus for discontinuous reception in the mobility management of the present invention can effectively reduce the probability that the measurement report and/or the handover command are delayed, thereby reducing the probability of handover failure, RLF, and improving user experience and system performance.
- FIG. 1 is a schematic diagram of a low power node hotspot coverage in the prior art
- FIG. 2 is a schematic diagram of a low power node cell edge coverage in the prior art
- FIG. 3 is a schematic diagram of an indoor coverage of a low power node in the prior art
- FIG. 4 is a schematic diagram of a DRX activation time and an inactivity time in the prior art
- FIG. 5 is a schematic diagram of a long DRX and a short DRX in the prior art
- 6 is a schematic diagram of a delay report of a measurement report in a long DRX state in the prior art
- FIG. 7 is a schematic diagram of a delay command of a handover command in a long DRX state in the prior art
- FIG. 8 is a schematic diagram of an embodiment of the present invention. A schematic diagram of UE and network coverage;
- FIG. 9 is a schematic flowchart of a process according to Embodiment 1 of the present invention.
- FIG. 10 is a schematic flowchart of a process according to Embodiment 2 of the present invention.
- FIG. 11 is a schematic flowchart of a process according to Embodiment 3 of the present invention.
- the evolved Node B configures the discontinuous reception (DRX) parameter for the UE.
- the UE only listens to the Physical Downlink Control CHannel (PDCCH) within the active time determined according to the DRX configuration parameter, and transmits data according to the scheduling of the PDCCH within the activation time.
- PDCCH Physical Downlink Control CHannel
- Figure 4 is a schematic diagram of DRX activation time and inactivity time.
- 400 is a DRX cycle.
- 401 is the DRX activation time
- 402 is the DRX inactivity time
- the UE only monitors the PDCCH within the 401 activation time, according to the scheduling of the PDCCH in the 401 activation time. transfer data.
- the DRX is divided into a long DRX and a short DRX.
- the long DRX can be used when the UE service data is sparse or time-discrete, and the UE has data after a relatively long period of time.
- the short DRX can be used when the data volume of the UE is relatively dense or relatively concentrated in time, and the UE will have data transmission after a relatively short period of time.
- Figure 5 is a schematic diagram of a long DRX and a short DRX.
- the handover area between macro cells is relatively long, therefore, When the UE enters the handover area between the macro cells, even if the UE is configured with a long DRX, the UE's mobile performance is not drastically degraded.
- LPN low power node
- the handover area between the macro cell and the LPN cell is relatively the handover area between the macro cell and the LPN cell. It is much smaller, for example, the handover area of the macro cell and the LPN cell is only 1/3 of the handover area between the legacy macro cells.
- the measurement report may be delayed to be sent to the network side, that is, until the next time.
- the DRX activation time is sent at the beginning of the time, resulting in a situation as shown in FIG. 6, that is, when the UE is in an inactive state of a long DRX state (601.
- the neighboring zone satisfies the trigger condition of the measurement report to trigger the measurement report 602,
- the measurement report is not sent to the network side until the activation time of 603, resulting in the length of the measurement delay 604, such as several hundred ms, because the handover area of the macro cell and the LPN cell is relatively small, several hundred
- the measurement report delay time of ms is likely to cause the PDCCH signaling sent by the subsequent UE to receive the serving base station scheduling measurement report to be interfered by the LPN cell and the reception fails, which ultimately causes the serving base station to fail to make the handover decision in time and cause the radio link failure of the UE ( Radio Link Failure, RLF).
- the serving base station makes a handover decision, the UE is in the DRX inactive state, and the serving base station can only wait for the next activation time to arrive, sending a handover command to the UE, resulting in a situation as shown in FIG.
- the serving base station makes a handover decision, the UE is in the DRX inactive state, and the serving base station can only wait for the next activation time to arrive, sending a handover command to the UE, resulting in a situation as shown in FIG.
- the base station makes a handover decision (702), but the handover command until the activation time of 703 can be sent to the UE, resulting in a length indicated by the handover command delay 704, such as Hundreds of ms, since the handover area of the macro cell and the LPN cell is relatively small, the handover command transmission delay time of several hundred ms is likely to cause the subsequent UE to receive the handover command to be interfered by the LPN cell and the reception fails, thereby eventually causing the handover to fail.
- the UE has a Radio Link Failure (RLF).
- RLF Radio Link Failure
- the method provides a discontinuous reception method in mobility management, and specifically adopts the following technical solutions:
- the base station After receiving the measurement report of the neighboring cell X reported by the UE, or receiving the measurement report of the neighboring cell X information reported by the UE, if the base station determines that the preset DRX modification condition is met, the base station changes The DRX configuration of the UE is changed, or the base station deletes the DRX configuration of the UE, and notifies the UE of the changed DRX configuration or the deleted DRX configuration.
- the UE receives the changed DRX configuration, and monitors the PDCCH according to the changed DRX configuration, or the UE receives the notification of deleting the DRX configuration, and continuously monitors the PDCCH.
- the indication of the neighboring cell X reported by the UE specifically including the physical cell identifier of the neighboring cell X
- PCI Physical Cell Identity
- CGI Cell Global Identity
- the measurement report of the neighboring cell X information reported by the UE, the neighboring cell X information specifically includes the PCI of the neighboring cell X, the measurement result, and optionally, the CGI of the neighboring cell X.
- the base station After receiving the indication of the neighboring cell X reported by the UE or receiving the measurement report of the neighboring cell X information reported by the UE, the base station according to the neighboring cell list information saved by the base station or according to the Operation Administration and Maintenance (OAM) When the neighbor cell X is determined to be a cell of a different type from the current serving cell Y of the UE, the base station changes the DRX configuration of the UE, or the base station deletes the DRX configuration of the UE. It should be noted that, in addition to the above, the base station may actively modify the DRX configuration in other cases.
- OAM Operation Administration and Maintenance
- the base station changes the DRX configuration of the UE, specifically, the base station reduces the DRX cycle.
- the base station may further increase the duration of the DRX configured duration timer (onDurationTimer), and/or increase the length of the DRX configured DRX activation time timer (drx-InactivityTimer).
- the base station deletes the DRX configuration of the UE, and specifically, the base station notifies the UE to release the DRX configuration. Receiving, by the UE, the changed DRX configuration, and monitoring according to the changed DRX configuration
- the PDCCH is that the UE listens to the PDCCH within the activation time of the changed DRX configuration.
- the measurement report of the neighboring cell X information reported by the UE may be sent to the base station in the inactive time of the DRX configuration before the change.
- UE (805) is currently in an RRC connected state in cell Y (802), and cell Y is controlled by 801 base station Y (eNB-Y).
- eNB-Y base station Y
- Rate node 803 for convenience of description, is referred to herein as base station X (eNB-X)
- the cell covered by the low power node is cell X (804)
- the travel route of the UE is shown as 806, and eNB-Y is currently configured for the UE.
- Long DRX The discontinuous reception enhancement method in the mobility management of this embodiment is shown in FIG. 9, and the processing flow is as follows:
- Step 901. The UE sends an indication of the neighboring cell X to the serving base station (base station Y).
- the UE finds that the neighboring cell N is close to the LPN cell X through the positioning information or the location information of the LPN cell that has been accessed by the UE.
- the UE sends an indication of the neighboring cell X to the base station Y.
- the PCI carrying the cell X may optionally also carry the CGI of the cell X, where the PCI and the CGI are saved when the UE accesses the cell B last time.
- Step 902. The base station Y changes the DRX configuration of the UE or deletes the DRX configuration of the UE, and notifies the UE.
- the base station Y After receiving the indication of the neighboring cell X reported by the UE, the base station Y determines that the neighboring cell X is a different type of cell from the current serving cell Y of the UE according to the neighboring cell list information saved by the base station or according to the neighboring cell information obtained from the OAM.
- the base station changes the DRX configuration of the UE, or the base station deletes the DRX configuration of the UE.
- different cell types mainly refer to cells having different cell sizes (coverages), such as a very small cell, a small cell, a medium cell, a large cell, and the like.
- the base station changes the DRX configuration of the UE, specifically, the base station reduces the DRX cycle.
- the base station may further increase the duration of the duration timer (onDurationTimer) of the DRX configuration, and/or increase the length of the DRX activation time timer (drx-InactivityTimer) configured by the DRX.
- the base station deletes the DRX configuration of the UE, and specifically, the base station notifies the UE to release the DRX configuration. Step 903.
- the UE monitors the PDCCH according to the changed DRX configuration, or the UE continuously monitors the PDCCH after receiving the notification of deleting the DRX configuration.
- the UE monitors the PDCCH according to the changed DRX configuration, that is, the UE monitors the PDCCH within the activation time of the changed DRX configuration.
- the coverage of the UE and the network in this embodiment is the same as that in the first embodiment, as shown in FIG. 8.
- the discontinuous reception enhancement method in the mobility management of this embodiment is as shown in FIG. 10, and the processing flow is as follows:
- Step 1001. The UE reports a measurement report to the base station Y.
- the UE measures and determines that the signal quality of the neighboring cell X is higher than a certain threshold according to the configuration information of the base station, but the signal quality of the neighboring cell X may not satisfy the condition that the UE is switched from the serving cell Y to the neighboring cell X, and the UE is in the DRX.
- the UE reports a measurement report to the base station Y, and the measurement report carries the measurement result of the PCI of the neighboring cell Y and the neighboring cell Y.
- the measurement 4 can also be Carry the CGI of the neighboring cell Y.
- the coverage of the UE and the network in this embodiment is the same as that in the first embodiment, as shown in FIG. 8.
- the discontinuous reception enhancement method in the mobility management of this embodiment is as shown in FIG. 11, and the processing flow is as follows:
- Step 1101 The UE determines that the UE is currently in a DRX inactive state.
- Step 1102 The UE reports the measurement report in the DRX inactive state.
- the base station configures a neighboring cell measurement event for the UE, and the measurement report triggering condition is that the signal quality of the neighboring cell is higher than the serving cell by a certain offset, and the base station performs the handover decision according to the measurement report.
- the UE measures and determines that the signal quality of the neighboring cell X is higher than the serving cell Y by a certain offset according to the configuration information of the base station, and triggers the measurement report.
- the UE determines that the UE reports the measurement report to the base station Y even though the UE is in the DRX inactive state.
- the measurement report carries the measurement result of the PCI of the neighboring cell Y and the neighboring cell Y. Alternatively, if the UE reads the CGI of the neighboring cell Y, the measurement report may also carry the CGI of the neighboring cell Y.
- the embodiment of the present invention further provides a discontinuous receiving apparatus in mobility management, which mainly includes a DRX configuration unit and an information receiving unit in a base station,
- the information receiving unit is configured to receive an indication of a neighboring cell reported by the UE, or a measurement report of the neighboring cell information reported by the UE;
- the DRX configuration unit is configured to tamper with the UE's DRX configuration and notify the UE when it is determined that the preset discontinuous reception (DRX) modification condition is met.
- the DRX configuration unit is configured to determine whether the preset DRX modification condition is met by:
- the DRX modification conditions
- the DRX configuration unit is configured to modify the DRX configuration of the UE as follows:
- the DRX configuration unit is configured to change the DRX configuration of the UE in the following manner:
- the DRX cycle of the UE is reduced, and the DRX activation time timer length of the DRX configuration is increased.
- the embodiment of the present invention further provides a discontinuous receiving apparatus in mobility management, including a DRX configuration receiving unit and a PDDCH listening unit in the UE.
- the DRX configuration receiving unit is configured to receive a notification message of the modified DRX configuration sent by the base station;
- the PDDCH listening unit is configured to monitor a physical downlink control channel (PDCCH) according to the received modified DRX configuration of the base station.
- the notification message of the modified DRX configuration received by the DRX configuration receiving unit includes: modifying the DRX configuration, or deleting the indication of the DRX configuration; the PDDCH monitoring unit is configured to: according to the received modified DRX configuration of the base station, within the activation time of the modified DRX configuration The PDCCH is monitored; or the DRX configuration is released, and the PDCCH is continuously monitored.
- PDCCH physical downlink control channel
- the method and apparatus for discontinuous reception in mobility management can effectively reduce the probability that a measurement report and/or a handover command is delayed, thereby reducing handover failure, probability of RLF, and improving user experience and system. performance.
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Abstract
本发明公开了一种移动性管理中的非连续接收方法及装置,基站接收UE上报的接近邻小区的指示、或者UE上报的携带邻小区信息的测量报告,在判定满足预设的DRX修改条件时,对UE的DRX配置进行修改并通知UE。本发明能够有效减少测量报告和/或切换命令被延迟的概率,从而减少切换失败、RLF的概率,提高用户体验和***性能。
Description
一种移动性管理中的非连续接收方法及装置
技术领域 本发明涉及移动通信技术领域, 尤其涉及一种移动性管理中的非连续接 收方法及装置。
背景技术
随着移动通信和信息技术的发展, 用户对数据业务的需求日益增长, 目 前的主流移动通信网络, 无论是釆用全球移动通信***(Global System For Mobile Communication, GSM ) /通用分组无线业务 ( General Packet Radio Service, GPRS ) 的第 2代 /第 2.5代移动通信网络, 还是釆用通用移动通信 *** ( Universal Mobile Telecommunications System, UMTS ) 的第 3代移动 通信网络,都是由运营商统一规划部署的同构网络( Homogeneous Network ) , 同构网络一旦部署, 一定区域内网络的容量固定。 为了满足日益井喷的数据 业务需求, 需要运营商部署更多的同构网络站点, 一方面, 部署和维护传统 同构宏网络站点费用高昂, 另一方面, 即使在原有网络基础上部署大量新站 点, 各站点一旦部署, 其网络容量固定, 不能适应网络中局部地区业务负载 变化的需求和服务质量(Quality of Service, QoS ) 变化的需求。
为了适应用户日益增长的数据业务需求, 第 4代移动通信在原有同构网 络的基础上部署一些低功率节点 (Lower Power Node, LPN ) , 包括低功率 微基站(pico eNB ) , 家庭基站( HeNB/CSG/femto ) , 中继节点(relay )等, 这些低功率节点由于其发射功率比较低, 因此相对于传统运营商统一部署的 基站(eNB、 NB等)所覆盖的宏小区 (macro cell ) , 这些低功率节点所覆 盖的小区可统称为微小区 (micro cell )或者小小区 ( small cell )或者低功率 节点小区 (LPN cell ) 。
低功率节点部署灵活, 比如可以部署在热点区域,增加热点区域的覆盖, 如图 1所示是一种低功率节点热点覆盖的示意图。 低功率节点可以根据用户 数量灵活的部署在热点区域, 增加热点区域的网络容量, 减轻热点区域宏小
区的负荷。 低功率节点还可以部署在小区边缘, 增强小区边缘的覆盖, 图 2 为一种低功率节点小区边缘覆盖的示意图, 可以有效增强小区边缘的覆盖, 提高小区边缘用户的 Qos。 此外, 低功率节点还可以部署在室内, 增强室内 覆盖, 图 3所示为一种低功率节点室内覆盖的示意图, 可以有效增强室内覆 盖, 提高室内用户的 Qos, 满足室内用户的大业务量需求, 同时减轻宏小区 的负荷。
低功率节点的部署, 可以在传统宏小区基础上增强小区覆盖, 增加网络 容量, 分担宏小区负荷, 增强特定用户的业务质量。 然而, 低功率节点由于 其发射功率低, 其小区覆盖范围相对传统宏小区小很多。 尤其对于同频部署 的低功率节点, 即宏小区的工作频率与其覆盖范围内所部署的低功率节点的 工作频率相同的情况, 相对传统宏小区之间的切换区域, 宏小区与低功率节 点小区之间切换区域比较小的特点, 在传统的移动性管理技术下, 很可能导 致用户设备 ( User Equipment, UE )在宏小区与 LPN小区之间发生切换失败 和无线链路失败(Radio Link Failure, RLF ) 的几率增加, 最终可能导致 UE 掉话, 影响用户体验和***系能。 而对于异频部署的低功率节点, 即宏小区 的工作频率与其覆盖范围内所部署的低功率节点的工作频率不同的情况, 相 对传统宏小区之间的切换区域, 宏小区与低功率节点小区之间切换区域比较 小的特点, 在传统的移动性管理技术下, 很可能导致切换延迟, 从而降低低 功率节点部署所带来的***增益, 尤其对于低功率节点用于进行宏小区边缘 覆盖增强的情况, 服务小区的信号质量已经很差, 延迟切换很有可能导致切 换失败, 从而最终导致 UE掉话, 影响用户体验和***性能。
发明内容
本发明解决的技术问题是提供一种移动性管理中的非连续接收方法及装 置, 用于提高移动性能。
为解决上述技术问题, 本发明提供了一种移动性管理中的非连续接收方 法, 其中,
基站接收用户设备 (UE)上报的接近邻小区的指示、 或者 UE上报的携带 邻小区信息的测量报告, 在判定满足预设的非连续接收 (DRX)修改条件时,
对所述 UE的 DRX配置进行爹改并通知所述 UE。
可选地, 所述的方法, 其中, 所述判定满足预设的 DRX修改条件的步 骤包括:
所述基站根据保存的邻区列表信息、 或者根据从网管***(OAM )中获 取的邻区信息, 判断出所述邻小区为与所述 UE的当前服务小区不同类型的 小区时, 判定满足所述预设的 DRX修改条件。
可选地, 所述的方法, 其中, 所述对所述 UE的 DRX配置进行修改的步 骤包括:
改变所述 UE的 DRX配置, 或者, 删除所述 UE的 DRX配置。
可选地,所述的方法,其中,所述改变所述 UE的 DRX配置的步骤包括: 减小所述 UE的 DRX周期;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的持续时间定时 器长度;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的 DRX激活时 间定时器长度。
可选地, 所述的方法, 其中, 所述接近邻小区的指示包括:
所述邻小区的物理小区标识(PCI ) ;
或者, 所述邻小区的 PCI和所述邻小区的全局小区标识 (CGI ) 。
可选地, 所述的方法, 其中, 所述测量^艮告携带的邻小区信息包括: 所述邻小区的 PCI;
或者, 所述邻小区的 PCI和所述邻小区的 CGI。
可选地, 所述的方法, 其还包括:
所述 UE在修改前的 DRX配置的非激活时间内,向所述基站上报所述携 带邻小区信息的测量报告。
可选地, 所述的方法, 其还包括:
所述 UE接收到所述基站发送的修改 DRX配置的通知消息后,按照所述
基站修改后的 DRX配置监听物理下行控制信道(PDCCH ) 。
可选地, 所述的方法, 其中, 所述 UE按照所述基站修改后的 DRX配置 监听 PDCCH的步骤包括:
所述 UE在改变后的 DRX配置的激活时间内监听 PDCCH;
或者, 所述 UE释放 DRX配置, 连续监听 PDCCH。
本发明还提供了一种移动性管理中的非连续接收装置, 其包括基站中的 非连续接收(DRX ) 配置单元和信息接收单元,
所述信息接收单元设置为, 接收用户设备(UE )上报的接近邻小区的指 示、 或者 UE上报的携带邻小区信息的测量报告;
所述 DRX配置单元设置为, 判定满足预设的 DRX修改条件时, 对所述 UE的 DRX配置进行爹改并通知所述 UE。
可选地, 所述的装置, 其中, 所述 DRX配置单元是设置为如下方式判 定满足预设的 DRX修改条件:
根据保存的邻区列表信息、 或者根据从网管***(OAM )中获取的邻区 信息, 判断出所述邻小区为与所述 UE的当前服务小区不同类型的小区时, 判定满足所述预设的 DRX修改条件。
可选地, 所述的装置, 其中, 所述 DRX配置单元是设置为如下方式对 所述 UE的 DRX配置进行爹改:
改变所述 UE的 DRX配置, 或者, 删除所述 UE的 DRX配置。
可选地, 所述的装置, 其中, 所述 DRX配置单元是设置为如下方式改 变所述 UE的 DRX配置:
减小所述 UE的 DRX周期;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的持续时间定时 器长度;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的 DRX激活时
间定时器长度。
本发明还提供了一种移动性管理中的非连续接收装置, 其包括用户设备
( UE ) 中的非连续接收( DRX ) 配置接收单元和 PDDCH监听单元 ,
所述 DRX配置接收单元设置为,接收基站发送的修改 DRX配置的通知 消息;
所述 PDDCH监听单元设置为,按照接收的所述基站修改后的 DRX配置 监听物理下行控制信道(PDCCH ) 。
可选地, 所述的装置, 其中,
所述 DRX配置接收单元接收的所述修改 DRX配置的通知消息包括: 修改后的 DRX配置, 或者, 删除 DRX配置的指示;
所述 PDDCH监听单元是设置为如下方式按照接收的所述基站修改后的 DRX配置监听 PDCCH:
在所述修改后的 DRX配置的激活时间内监听 PDCCH;或者,释放 DRX 配置, 连续监听 PDCCH。
釆用本发明的移动性管理中的非连续接收的方法及装置, 可以有效减少 测量报告和 /或切换命令被延迟的概率, 从而减少切换失败、 RLF的概率, 提 高用户体验和***性能。
附图概述 图 1为现有技术的一种低功率节点热点覆盖的示意图;
图 2为现有技术的一种低功率节点小区边缘覆盖的示意图;
图 3为现有技术的一种低功率节点室内覆盖的示意图;
图 4为现有技术的一种 DRX激活时间和非激活时间的示意图; 图 5为现有技术的一种长 DRX和短 DRX的示意图;
图 6为现有技术的一种长 DRX状态下测量报告被延迟发送的示意图; 图 7为现有技术的一种长 DRX状态下切换命令被延迟发送的示意图; 图 8为本发明实施例的一种 UE及网络覆盖情况的示意图;
图 9为本发明实施例一的处理流程示意图;
图 10为本发明实施例二的处理流程示意图;
图 11为本发明实施例三的处理流程示意图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施方式进行详细说明。 需要说明的是, 组合。
相关技术中, 为保证用户设备 ( User Equipment , UE ) 的业务质量, 但 同时又尽量减少 UE的功耗, 基站( evolved Node B, eNB )会为 UE配置非 连续接收( Discontinuous Reception, DRX )参数, UE只在根据 DRX配置参 数所确定的激活时间 ( active time ) 内监听物理下行控制信道 ( Physical Downlink Control CHannel, PDCCH ) , 根据 PDCCH的调度在激活时间内传 输数据。
图 4为一种 DRX激活时间和非激活时间的示意图。 其中, 400为一个 DRX周期, 该示意图中, 在该 DRX周期下, 401为 DRX激活时间, 402为 DRX非激活时间, UE只在 401激活时间内监听 PDCCH, 根据 PDCCH的调 度在 401激活时间内传输数据。
相关技术中, DRX分为长 DRX和短 DRX, —般情况下, 长 DRX可用 于 UE业务数据比较稀疏或者说时间上比较离散, 且 UE相隔比较长的一段 时间后才会有数据的情况,而短 DRX可用于 UE数据量比较密集或者时间上 相对比较集中, 且 UE相隔比较短的一段时间后就会有数据传输的情况。 如 图 5为一种长 DRX和短 DRX的示意图。
在传统宏网络中, 由于宏小区之间的切换区域相对而言比较长, 因此,
当 UE进入宏小区之间的切换区域时, 即使为 UE配置了长 DRX, 不会导致 UE的移动性能急剧下降。 然而, 当宏网络中引入低功率节点 (Lower Power Node, LPN )后, 当 UE进入宏小区与 LPN小区的切换区域时, 相对宏小区 之间的切换区域, 宏小区与 LPN小区的切换区域相对而言小很多, 比如宏小 区与 LPN小区的切换区域只有传统宏小区之间的切换区域的 1/3大。 而相关 技术中规定, 一方面, UE 测量评估邻区满足网络侧配置的测量报告的触发 条件时,如果 UE处于 DRX的非激活时间,所述测量报告可以延迟发送给网 络侧, 即等到下一次 DRX激活时间开始时发送, 从而导致如图 6所示的情 况, 即当 UE处于长 DRX状态 (601.长 DRX周期) 的非激活状态时, 邻区 满足测量报告的触发条件触发测量报告 602, 但是该测量报告直到 603的激 活时间才被发送给网络侧, 导致测量^艮告延迟 604 所示的长度, 比如几百 ms, 由于宏小区与 LPN小区的切换区域相对而言很小, 几百 ms的测量报告 延迟时间很有可能导致后续 UE接收服务基站调度测量报告发送的 PDCCH 信令被 LPN小区干扰而接收失败,从而最终导致服务基站无法及时作出切换 决策而致使 UE发生无线链路失败(Radio Link Failure, RLF ) 。 另一方面, 如果服务基站作出切换决策时, UE正好处于 DRX非激活状态, 服务基站只 能等待下一次激活时间到来时向 UE发送切换命令, 从而导致如图 7所示的 情况, 即当 UE处于长 DRX状态 (701.长 DRX周期) 的非激活状态时, 基 站作出切换决策(702 ) ,但是切换命令直到 703的激活时间才能发送给 UE, 导致切换命令延迟 704所示的长度, 比如几百 ms, 由于宏小区与 LPN小区 的切换区域相对而言很小, 几百 ms的切换命令发送延迟时间很有可能导致 后续 UE接收切换命令被 LPN小区干扰而接收失败,从而最终导致切换失败, UE发生无线链路失败(Radio Link Failure, RLF ) 。
因此, 为了真正实现低功率节点的部署以达到为传统宏小区增强覆盖、 增强网络容量、 分担宏小区负荷的目的, 同时又不影响***性能, 需要寻求 对传统移动性管理的增强方法, 本实施方式提供一种移动性管理中的非连续 接收方法, 具体釆用如下技术方案:
基站收到 UE上报的接近邻小区 X的指示, 或者收到 UE上报的携带邻 小区 X信息的测量报告后, 如判断出满足预设的 DRX修改条件, 则基站改
变 UE的 DRX配置 ,或者基站删除 UE的 DRX配置 ,并把所述改变后的 DRX 配置或者所述删除 DRX配置的通知给 UE。
UE接收所述改变后的 DRX 配置, 按照所述改变后的 DRX 配置监听 PDCCH, 或者 UE接收所述删除 DRX配置的通知, 连续监听 PDCCH。
UE上报的接近邻小区 X 的指示, 具体包括邻小区 X的物理小区标识
( Physical Cell Identity, PCI ) , 可选地, 还可以包括邻小区 X的全局小区标 识( Cell Global Identity, CGI ) 。
UE上报的的携带邻小区 X信息的测量报告, 邻小区 X信息具体包括, 邻小区 X的 PCI, 测量结果, 可选地, 还可以包括邻小区 X的 CGI。
基站接收到 UE上报的接近邻小区 X的指示或者收到 UE上报的携带邻 小区 X信息的测量报告后,根据基站保存的邻区列表信息或者根据从网管系 统 ( Operation Administration and Maintenance, OAM ) 中获取的邻区信息, 判断邻小区 X为与 UE当前的服务小区 Y不同类型的小区时, 基站改变 UE 的 DRX配置, 或者基站删除 UE的 DRX配置。 需要说明的是, 除上述情况 以外, 基站在其他一些情况下也可以主动修改 DRX配置。
基站改变 UE的 DRX配置, 具体是指, 基站减小 DRX周期。 可选地, 基站还可以增大 DRX配置的持续时间定时器( onDurationTimer )长度, 和 / 或增大 DRX配置的 DRX激活时间定时器( drx-InactivityTimer )长度。
基站删除 UE的 DRX配置, 具体是指, 基站通知 UE释放 DRX配置。 UE接收所述改变后的 DRX 配置, 按照所述改变后的 DRX 配置监听
PDCCH , 是指, UE在改变后的 DRX配置的激活时间内监听 PDCCH。
可选地, 所述 UE上报的携带邻小区 X信息的测量报告, 可以在所述改 变前的 DRX配置的非激活时间内发送给基站。
实施例一
如图 8所示, UE ( 805 ) 当前在小区 Y ( 802 ) 中处于 RRC连接状态, 小区 Y为 801基站 Y ( eNB-Y )所控制。 小区 Y覆盖范围下部署有一个低功
率节点 803 , 为描述方便此处称为基站 X ( eNB-X ) , 该低功率节点所覆盖 的小区为小区 X ( 804 ) , UE的行进路线如 806所示, eNB-Y当前为 UE配 置了长 DRX。 本实施例移动性管理中的非连续接收增强方法如图 9所示, 其处理流程 如下:
步骤 901. UE向服务基站(基站 Y )发送接近邻小区 X的指示。
UE通过定位信息或者根据 UE所保存的曾经接入过的 LPN小区的位置 信息等机制发现接近了 LPN小区 X, UE向基站 Y发送接近邻小区 X的指示。 所述接近邻小区 X的指示中, 携带小区 X的 PCI, 可选地还可以携带小区 X 的 CGI, 所述 PCI和 CGI为 UE上一次接入小区 B时保存的。
步骤 902.基站 Y改变 UE的 DRX配置或者删除 UE的 DRX配置, 并通 知 UE。
基站 Y接收 UE上报的接近邻小区 X的指示后,根据基站保存的邻区列 表信息或者根据从 OAM中获取的邻区信息, 判断邻小区 X为与 UE当前的 服务小区 Y不同类型的小区, 基站改变 UE的 DRX配置, 或者基站删除 UE 的 DRX配置。 这里, 不同的小区类型, 主要是指具有不同小区大小 (覆盖范围) 的小 区, 比如极小的小区, 小小区, 中等小区, 大小区等类型。 基站改变 UE的 DRX配置, 具体是指, 基站减小 DRX周期。 可选地, 基站还可以增大 DRX配置的持续时间定时器( onDurationTimer )长度 , 和 / 或增大 DRX配置的 DRX激活时间定时器( drx-InactivityTimer )长度。
基站删除 UE的 DRX配置, 具体是指,基站通知 UE释放到 DRX配置。 步骤 903. UE按照改变后的 DRX配置监听 PDCCH, 或者 UE接收删除 DRX配置的通知后, 连续监听 PDCCH。
UE按照改变后的 DRX配置监听 PDCCH, 是指, UE在改变后的 DRX 配置的激活时间内监听 PDCCH。
实施例二
本实施例 UE及网络覆盖情况同实施例一, 如图 8所示。 本实施例移动 性管理中的非连续接收增强方法如图 10所示, 其处理流程如下:
步骤 1001. UE向基站 Y上报测量报告。
UE根据基站的配置信息, 测量并判断邻小区 X的信号质量高于一定门 限,但邻小区 X的信号质量可以尚未满足把 UE从服务小区 Y切换到邻小区 X的条件, 此时 UE处于 DRX激活状态, UE向基站 Y上报测量报告, 测量 报告中携带邻小区 Y的 PCI和邻小区 Y的测量结果, 可选地, 如果 UE读取 到了邻小区 Y的 CGI, 测量 4艮告中还可以携带邻小区 Y的 CGI。
步骤 1002 1003.同实施例一中步骤 902~903。
实施例三
本实施例 UE及网络覆盖情况同实施例一, 如图 8所示。 本实施例移动 性管理中的非连续接收增强方法如图 11所示, 其处理流程如下:
步骤 1101.UE判断 UE当前处于 DRX非激活状态。
步骤 1102.UE在 DRX非激活状态上报测量报告。
基站为 UE配置了邻区测量事件, 该测量事件的测量报告触发条件为邻 小区的信号质量比服务小区高一定偏移量, 基站将依据此测量报告进行切换 判决。 UE根据基站的配置信息, 测量并判断邻小区 X的信号质量比服务小 区 Y高一定偏移量, 触发测量报告, UE判断虽然此时 UE处于 DRX非激活 状态, UE向基站 Y上报测量报告, 测量报告中携带邻小区 Y的 PCI和邻小 区 Y的测量结果, 可选地, 如果 UE读取到了邻小区 Y的 CGI, 测量报告中 还可以携带邻小区 Y的 CGI。
步骤 1103 1104.同实施例一中的步骤 902~903。
本发明实施例中还提供了一种移动性管理中的非连续接收装置, 主要包 括基站中的 DRX配置单元和信息接收单元,
所述信息接收单元设置为,接收 UE上报的接近邻小区的指示、或者 UE 上报的携带邻小区信息的测量报告;
所述 DRX配置单元设置为,判定满足预设的非连续接收 (DRX)修改条件 时 , 对所述 UE的 DRX配置进行爹改并通知所述 UE。
可选地, 所述 DRX配置单元设置为, 通过以下方式判断是否满足所述 预设的 DRX修改条件:
根据保存的邻区列表信息、 或者根据从网管***(OAM )中获取的邻区 信息, 判断出所述邻小区为与所述 UE的当前服务小区不同类型的小区时, 判定满足所述预设的 DRX修改条件。
可选地, 所述 DRX配置单元设置为, 对所述 UE的 DRX配置进行如下 修改:
改变所述 UE的 DRX配置, 或者, 删除所述 UE的 DRX配置。
可选地,所述 DRX配置单元设置为,按照以下方式改变所述 UE的 DRX 配置:
减小所述 UE的 DRX周期;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的持续时间定时 器长度;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的 DRX激活时 间定时器长度。
此外, 本发明实施例中还提供了一种移动性管理中的非连续接收装置, 包括 UE中的 DRX配置接收单元和 PDDCH监听单元,
所述 DRX配置接收单元设置为,接收基站发送的修改 DRX配置的通知 消息;
所述 PDDCH监听单元设置为,按照接收的所述基站修改后的 DRX配置 监听物理下行控制信道(PDCCH ) 。 可选地,所述 DRX配置接收单元接收的所述修改 DRX配置的通知消息
中, 包括: 修改后的 DRX配置, 或者, 删除 DRX配置的指示; 所述 PDDCH监听单元设置为,按照接收的所述基站修改后的 DRX配置, 在所述修改后的 DRX配置的激活时间内监听 PDCCH; 或者, 释放 DRX配 置, 连续监听 PDCCH。
以上仅为本发明的优选实施案例而已, 并不用于限制本发明, 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做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。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并 且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者 将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件 结合。
工业实用性 本发明实施方式的移动性管理中的非连续接收的方法及装置, 可以有效 减少测量报告和 /或切换命令被延迟的概率,从而减少切换失败、 RLF的概率, 提高用户体验和***性能。
Claims
1、 一种移动性管理中的非连续接收方法, 其中,
基站接收用户设备 (UE)上报的接近邻小区的指示、 或者 UE上报的携带 邻小区信息的测量报告, 在判定满足预设的非连续接收 (DRX)修改条件时, 对所述 UE的 DRX配置进行爹改并通知所述 UE。
2、 如权利要求 1所述的方法, 其中, 所述判定满足预设的 DRX修改条 件的步骤包括:
所述基站根据保存的邻区列表信息、 或者根据从网管***(OAM )中获 取的邻区信息, 判断出所述邻小区为与所述 UE的当前服务小区不同类型的 小区时, 判定满足所述预设的 DRX修改条件。
3、 如权利要求 1所述的方法, 其中, 所述对所述 UE的 DRX配置进行 修改的步骤包括:
改变所述 UE的 DRX配置, 或者, 删除所述 UE的 DRX配置。
4、 如权利要求 3所述的方法, 其中, 所述改变所述 UE的 DRX配置的 步骤包括:
减小所述 UE的 DRX周期;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的持续时间定时 器长度;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的 DRX激活时 间定时器长度。
5、 如权利要求 1所述的方法, 其中, 所述接近邻小区的指示包括: 所述邻小区的物理小区标识(PCI ) ; 或者, 所述邻小区的 PCI和所述邻小区的全局小区标识 (CGI ) 。
6、如权利要求 1所述的方法, 其中, 所述测量报告携带的邻小区信息包 括:
所述邻小区的 PCI; 或者, 所述邻小区的 PCI和所述邻小区的 CGI。
7、 如权利要求 1或 6所述的方法, 其还包括:
所述 UE在修改前的 DRX配置的非激活时间内,向所述基站上报所述携 带邻小区信息的测量报告。
8、 如权利要求 1或 3所述的方法, 其还包括:
所述 UE接收到所述基站发送的修改 DRX配置的通知消息后 ,按照所述 基站修改后的 DRX配置监听物理下行控制信道(PDCCH ) 。
9、 如权利要求 8所述的方法, 其中, 所述 UE按照所述基站修改后的 DRX配置监听 PDCCH的步骤包括:
所述 UE在改变后的 DRX配置的激活时间内监听 PDCCH;
或者, 所述 UE释放 DRX配置, 连续监听 PDCCH。
10、 一种移动性管理中的非连续接收装置, 其包括基站中的非连续接收 ( DRX ) 配置单元和信息接收单元,
所述信息接收单元设置为, 接收用户设备(UE )上报的接近邻小区的指 示、 或者 UE上报的携带邻小区信息的测量报告;
所述 DRX配置单元设置为, 判定满足预设的 DRX修改条件时, 对所述 UE的 DRX配置进行爹改并通知所述 UE。
11、 如权利要求 10所述的装置, 其中, 所述 DRX配置单元是设置为如 下方式判定满足预设的 DRX修改条件:
根据保存的邻区列表信息、 或者根据从网管***(OAM )中获取的邻区 信息, 判断出所述邻小区为与所述 UE的当前服务小区不同类型的小区时, 判定满足所述预设的 DRX修改条件。
12、 如权利要求 10或 11所述的装置, 其中, 所述 DRX配置单元是设 置为如下方式对所述 UE的 DRX配置进行修改:
改变所述 UE的 DRX配置, 或者, 删除所述 UE的 DRX配置。
13、 如权利要求 12所述的装置, 其中, 所述 DRX配置单元是设置为如 下方式改变所述 UE的 DRX配置:
减小所述 UE的 DRX周期;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的持续时间定时 器长度;
或者, 减小所述 UE的 DRX周期, 以及增大 DRX配置的 DRX激活时 间定时器长度。
14、 一种移动性管理中的非连续接收装置, 其包括用户设备(UE )中的 非连续接收( DRX ) 配置接收单元和 PDDCH监听单元,
所述 DRX配置接收单元设置为,接收基站发送的修改 DRX配置的通知 消息;
所述 PDDCH监听单元设置为,按照接收的所述基站修改后的 DRX配置 监听物理下行控制信道(PDCCH ) 。
15、 如权利要求 14所述的装置, 其中,
所述 DRX配置接收单元接收的所述修改 DRX配置的通知消息包括: 修改后的 DRX配置, 或者, 删除 DRX配置的指示;
所述 PDDCH监听单元是设置为如下方式按照接收的所述基站修改后的 DRX配置监听 PDCCH:
在所述修改后的 DRX配置的激活时间内监听 PDCCH;或者,释放 DRX 配置, 连续监听 PDCCH。
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CN109756995B (zh) * | 2017-11-01 | 2020-09-25 | 北京紫光展锐通信技术有限公司 | 网络侧设备、终端及其邻区测量方法 |
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