CN103118408B - Method, the Apparatus and system of cell measuring method, cell measurement and switching - Google Patents
Method, the Apparatus and system of cell measuring method, cell measurement and switching Download PDFInfo
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- CN103118408B CN103118408B CN201110362935.0A CN201110362935A CN103118408B CN 103118408 B CN103118408 B CN 103118408B CN 201110362935 A CN201110362935 A CN 201110362935A CN 103118408 B CN103118408 B CN 103118408B
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Abstract
A method for cell measurement and switching, the method comprises: user UE uses at least two sectorized antennas, measures respectively the Received signal strength of different sectorized antennas; The wireless remote unit R RU at UE place belongs to same distributed Base Band Unit BBU, then determine without the need to cell merge; The RRU at UE place belongs to different BBU, then determined whether to need to carry out cell merge by base station.There is disclosed herein a kind of method of cell measurement, the device of a kind of cell measurement and switching and system.After the application embodiment of the present invention, reduce cell search time, and then lower call cutting off rate.
Description
Technical field
The present invention relates to communication technical field, more specifically, relate to method, the Apparatus and system of a kind of cell measuring method, cell measurement and switching.
Background technology
In a communications system, the scheme of distributed Base Band Unit (BBU)+wireless remote unit (RRU) can be adopted to carry out networking.The number of RRU can adjust according to the footprint size of single subdistrict.Specific embodiment is see accompanying drawing 1.Comprise 2 RRU under a BBU in accompanying drawing 1, the covering of different RRUs belongs to same community.Like this, compared with the networking plan of single RRU, just can expand the coverage of single subdistrict, and then the switching times of UE can be reduced, reduce cutting off rate, the communication experiences of adding users.Meanwhile, employ the number of BBU owing to reducing, also can reduce the cost of arranging net for operator.
For the UE in high-speed railway communication system, due to the high-speed mobile of train, correspondingly the translational speed of UE is very fast, within the identical time, UE needs through multiple different community, therefore needs to carry out Cell searching and switching frequently, to ensure the continuous communiction of UE.Distributed BBU+RRU scheme is particularly useful in private network communication system, the high ferro private network communication system that the telex network demand on train that such as aims at is set up.The number of the RRU under a BBU can be selected as required.
In common distributed BBU+RRU networking plan, the signal overlap overlay area of two RRU is approximately 500 meters, as shown in Figure 1.If two RRU belong to different BBU respectively, then two RRU belong to two different communities respectively.Because UE translational speed on bullet train is very fast, and two of different districts RRU's is overlapping covered less, and therefore UE needs within a short period of time by a cell merge to another community.In this case, UE need in the short period of time by a cell merge to another community, and UE can experience multiple different districts within the identical time, and therefore UE needs carry out Cell searching and switching frequently, and then add call cutting off rate, decrease telex network and experience.
Summary of the invention
The embodiment of the present invention proposes a kind of method of cell measurement, UE utilizes at least two sectorized antennas to measure respectively the signal received separately, to obtain the signal measurement result of different directions, add UE to the selectivity of different directions uplink link and accuracy; Add the pendulous frequency to neighbor cell, UE can complete Cell searching within the relatively long time, adds the success rate of switching, and then decreases the cutting off rate of UE call simultaneously.
The embodiment of the present invention also proposes a kind of method of cell measurement and switching, UE utilizes at least two sectorized antennas to measure respectively the signal received separately, to obtain the signal measurement result of different directions, add UE to the selectivity of different directions uplink link and accuracy; Add the pendulous frequency to neighbor cell, UE can complete Cell searching within the relatively long time, adds the success rate of switching, and then decreases the cutting off rate of UE call simultaneously.
The embodiment of the present invention also proposes the device of a kind of cell measurement and switching, UE utilizes at least two sectorized antennas to measure respectively the signal received separately, to obtain the signal measurement result of different directions, add UE to the selectivity of different directions uplink link and accuracy; Add the pendulous frequency to neighbor cell, UE can complete Cell searching within the relatively long time, adds the success rate of switching, and then decreases the cutting off rate of UE call simultaneously.
The embodiment of the present invention also proposes the system of a kind of cell measurement and switching, UE utilizes at least two sectorized antennas to measure respectively the signal received separately, to obtain the signal measurement result of different directions, add UE to the selectivity of different directions uplink link and accuracy; Add the pendulous frequency to neighbor cell, UE can complete Cell searching within the relatively long time, adds the success rate of switching, and then decreases the cutting off rate of UE call simultaneously.
The technical scheme of the embodiment of the present invention is as follows:
A method for cell measurement, described method comprises:
User UE uses at least two sectorized antennas, measures respectively the Received signal strength of different sectorized antennas;
UE determines measurement result.
Described UE determines that measurement result comprises: the wireless remote unit R RU at UE place belongs to same distributed Base Band Unit BBU, then UE gets maximum, the sectorized antennas of transmitting uplink data or the sectorized antennas of downlink data reception according to sectorized antennas, at least two measurement results, select a measurement result.
Described UE determines that measurement result comprises: the RRU at UE place belongs to different BBU, and UE, by measuring the Received signal strength of sectorized antennas, obtains at least two measurement results and corresponding ID.
A method for cell measurement and switching, the method comprises:
User UE uses at least two sectorized antennas, measures respectively the Received signal strength of different sectorized antennas;
The wireless remote unit R RU at UE place belongs to same distributed Base Band Unit BBU, then determine without the need to cell merge;
The RRU at UE place belongs to different BBU, then determined whether to need to carry out cell merge by base station.
Describedly determine whether that needing to carry out cell merge comprises by base station:
The measurement result and the cell ID corresponding with community of measuring at least Liang Ge community obtained are reported to base station;
Base station determines whether to need to carry out cell merge according to described measurement result and described little distinctive emblem.
Describedly determine to comprise without the need to cell merge: the measurement result of at least two measurement results and cell ID are reported to base station.
A device for cell measurement and switching, described device comprises:
Sectorized antennas, for carrying out the reception of downlink data;
Control module, for measuring respectively the Received signal strength of different fan antenna, and sends measurement result to base station;
Handover module, cell merge is carried out in the instruction sent for receiving base station.
Described control module comprises measuring unit and reports unit,
Measuring unit, for measuring respectively the Received signal strength of different fan antenna;
Report unit, when the wireless remote unit R RU at UE place belongs to same distributed Base Band Unit BBU, then the measurement result of at least two measurement results and cell ID are sent to base station; When UE place, RRU does not belong to same BBU, then at least two measurement results and corresponding cell ID are sent to base station.
A system for cell measurement and switching, described system comprises: the device of cell measurement and switching and base station,
The device of described cell measurement and switching comprises sectorized antennas, control module and handover module;
Sectorized antennas, for carrying out the reception of downlink data;
Control module, for measuring respectively the Received signal strength of different fan antenna, and sends measurement result to base station;
Handover module, cell merge is carried out in the instruction sent for receiving base station;
Base station, for receiving measurement result, sends instruction to handover module.
Described control comprises measuring unit and reports unit,
Measuring unit, for measuring respectively the Received signal strength of different fan antenna;
Report unit, when the wireless remote unit R RU at UE place belongs to same distributed Base Band Unit BBU, then the measurement result of at least two measurement results and cell ID are sent to base station; When UE place, RRU does not belong to same BBU, then at least two measurement results and corresponding cell ID are sent to base station.
As can be seen from technique scheme, in embodiments of the present invention, UE uses at least two sectorized antennas, and measures respectively the Received signal strength of different sectorized antennas; If the Received signal strength of the different sectorized antennas of UE belongs to same community and same BBU, without the need to cell merge, report to base station according to selecting a measurement result at least two measurement results together with community ID.If the Received signal strength of the different sectorized antennas of UE belongs to different communities and different BBU, then UE is by least the measurement result of Liang Ge community and the community ID of correspondence report to base station together.Base station receives the measurement result of at least Liang Ge community that UE reports, and determines whether this UE carries out cell merge by base station.If reach corresponding condition, then notify that this UE carries out cell merge.
UE utilizes at least two sectorized antennas to measure respectively the signal received separately, to obtain the signal measurement result of different directions, adds UE to the selectivity of different directions uplink link and accuracy; Add the pendulous frequency to neighbor cell, UE can complete Cell searching within the relatively long time, and then adds the success rate of switching, and then decreases the cutting off rate of UE call simultaneously.
Accompanying drawing explanation
Fig. 1 is distributed BBU+RRU networking schematic diagram in prior art;
Fig. 2 is the method flow schematic diagram of embodiment of the present invention cell measurement and switching;
Fig. 3 is the schematic diagram of embodiment of the present invention UE when being in identical BBU;
Fig. 4 is the schematic diagram of embodiment of the present invention UE when being in different BBU;
Fig. 5 is the system configuration schematic diagram of embodiment of the present invention cell measurement and switching.
Embodiment
Express clearly clear for making the object, technical solutions and advantages of the present invention, below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
In embodiments of the present invention, UE uses at least two sectorized antennas, and measures respectively the Received signal strength of different sectorized antennas; If the Received signal strength of the different sectorized antennas of UE belongs to same community and same BBU, then according to selecting a measurement result to report to base station together with community ID at least two measurement results; If the Received signal strength of the different sectorized antennas of UE belongs to different communities and different BBU, then UE is by least the measurement result of Liang Ge community and the community ID of correspondence report to base station together.Base station receives the measurement result of at least Liang Ge community that UE reports, and determines whether this UE carries out cell merge by base station, if reach corresponding condition, then notifies that this UE carries out cell merge.
UE utilizes at least two sectorized antennas to measure respectively the signal received separately, to obtain the signal measurement result of different directions, adds UE to the selectivity of different directions uplink link and accuracy; Add the pendulous frequency to neighbor cell, UE can complete Cell searching within the relatively long time, and then adds the success rate of switching, and then decreases the cutting off rate of UE call simultaneously.
It should be noted that: for the private network communication system of high-speed railway, UE can be the onboard system on train, and its sectorized antennas is the antenna that train exterior is installed.
See the method flow schematic diagram that accompanying drawing 2 is cell measurement and switching, specifically comprise the following steps:
Step 201, UE use at least two sectorized antennas, measure respectively the Received signal strength of different sectorized antennas.
In the present invention, UE uses at least two sectorized antennas, measures respectively the Received signal strength of different sectorized antennas.Because sectorized antennas has certain directivity, UE uses sectorized antennas only to measure the Received signal strength in certain direction.
The community ID that step 202, UE select measurement result corresponding with it at least two measurement results reports to base station.
The Received signal strength of different sectorized antennas belongs to same BBU and same community, then community ID corresponding with it for the measurement result of in the measurement result in the measurement result of different sectorized antennas is reported to base station.
When the Received signal strength of the different sectorized antennas of UE belongs to same community, then get maximum, the sectorized antennas of transmitting uplink data or the sectorized antennas principle of downlink data reception according to different sectorized antennas, at least two measurement results, select a measurement result to report to base station together with community ID.
Different sectorized antennas gets maximum: the measurement result at least two sectorized antennas of UE compares, and gets wherein maximum measurement result and reports together with corresponding community ID.
The sectorized antennas of transmitting uplink data: if the transmitting uplink data of UE carries out a day line options, also be that UE is when uplink, select the some antennas at least two sectorized antennas to carry out the transmission of upstream data, then the downlink measurements choosing the antenna carrying out transmitting uplink data reports together with corresponding community ID.
The sectorized antennas that downlink data receives: if UE carries out a day line options when downlink data receiving, also be that UE is when carrying out downlink data and receiving process, only select the downlink data of the some antennas at least two sectorized antennas to process, then the downlink measurements choosing the antenna carrying out downlink data transmission reports together with corresponding community ID.
Carried out the reception of downlink data respectively by sectorized antennas 1 and sectorized antennas 2 see accompanying drawing 3, UE.Two sectorized antennas receive the signal of different directions respectively, UE measures respectively, in two measurement results, get maximum, the sectorized antennas of transmitting uplink data or the sectorized antennas principle of downlink data reception according to different sectorized antennas and select a measurement result, by this measurement result together with community ID reporting base station.Because RRU0, RRU1, RRU2 and the RRU3 at UE place all belong to same BBU, also namely belong to same community, so the measurement result of the different sectorized antennas of UE belongs to same community.The adjustment of modulation coding mode (MCS) and credit rating instruction (CQI) is carried out according to the measurement result that UE reports in base station.
Different measurement results and corresponding community ID are reported to base station by step 203, UE.
The Received signal strength of different sectorized antennas belongs to different BBU and different communities, then the measurement result of different sectorized antennas is carried out following process.
When the Received signal strength of the different sectorized antennas of UE belongs to different communities, then by least the measurement result of Liang Ge community and the community ID of correspondence report to base station together.Carried out the reception of downlink data respectively by sectorized antennas 1 and sectorized antennas 2 see accompanying drawing 4, UE.Two sectorized antennas receive the signal of different directions respectively, and UE measures respectively, in two measurement results, by different measurement results together with corresponding community ID together reporting base station.RRU2, the RRU3 at UE place belong to BBU1, RRU0 and RRU1 described in UE belongs to BBU2, so the measurement result of the different sectorized antennas of UE belongs to different communities.
Wherein, the technical scheme of step 201 to 203 also can be utilized to carry out cell measurement.
The measurement result that step 204, base station report according to UE, determines whether UE switches.
The measurement result that base station reports according to UE, determines whether UE switches.Concrete, whether be greater than certain threshold value according to the measuring-signal of neighbor cell, whether the signal measuring-signal that is whether good than the signal quality of this community, this community of neighbor cell be worse than the criterions such as certain threshold value, determine whether this UE carries out cell merge.If reach corresponding condition, then notify that this UE carries out cell merge.Above-mentionedly determine that whether to carry out switching be prior art to UE according to criterion.
Because UE adopts the signal of sectorized antennas to different directions to measure respectively, cell measurement results is reported to base station, determines cell merge by base station.Adopt such scheme, add the accuracy of measurement, extend the time that UE switches, while reducing call cutting off rate further, add the success rate that UE switches.
See the system configuration schematic diagram that accompanying drawing 5 is cell measurement and switching, comprising:
This system comprises device and the base station of cell measurement and switching.Wherein, the device of cell measurement and switching comprises: sectorized antennas 501, control module 502 and handover module 503.
Sectorized antennas 501, for carrying out the reception of downlink data.
Control module 502, for measuring respectively the Received signal strength of different fan antenna, and sends measurement result to base station.
Control module 502 comprises measuring unit 5021 and reports unit 5022.
Measuring unit 5021, for measuring the signal of different sectorized antennas, being sent to measurement result and corresponding cell ID and reporting unit 5022.
Report unit 5022, when the wireless remote unit R RU at UE place belongs to same distributed Base Band Unit BBU, then the measurement result of at least two measurement results and cell ID are sent to base station; When UE place, RRU does not belong to same BBU, then at least two measurement results and corresponding cell ID are sent to base station.
Handover module 503, cell merge is carried out in the instruction sent for receiving base station.
Base station 504, for receiving measurement result, sends instruction to handover module 503.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a method for cell measurement and switching, is characterized in that, the method comprises:
User UE uses at least two sectorized antennas, measures respectively the Received signal strength of different sectorized antennas;
If the wireless remote unit R RU that the Received signal strength of the different sectorized antennas of UE is corresponding belongs to same distributed Base Band Unit BBU, then determine without the need to cell merge;
If the RRU that the Received signal strength of the different sectorized antennas of UE is corresponding belongs to different BBU, then determined whether to need to carry out cell merge by base station;
Describedly determine whether that needing to carry out cell merge comprises by base station:
The measurement result and the cell ID corresponding with community of measuring at least Liang Ge community obtained are reported to base station;
Base station determines whether to need to carry out cell merge according to described measurement result and described cell ID;
Describedly determine to comprise without the need to cell merge: the measurement result of at least two measurement results and cell ID are reported to base station.
2. a device for cell measurement and switching, is characterized in that, described device comprises:
Sectorized antennas, for carrying out the reception of downlink data;
Control module, for measuring respectively the Received signal strength of different sectorized antennas, and sends measurement result to base station;
Handover module, for receiving the instruction of base station transmission to carry out cell merge;
Described control module comprises measuring unit and reports unit,
Measuring unit, for measuring respectively the Received signal strength of different sectorized antennas;
Report unit, if wireless remote unit R RU corresponding to the Received signal strength of the different sectorized antennas of UE belongs to same distributed Base Band Unit BBU, then the measurement result of at least two measurement results and cell ID are sent to base station; If the RRU that the Received signal strength of the different sectorized antennas of UE is corresponding does not belong to same BBU, then at least two measurement results and corresponding cell ID are sent to base station.
3. a system for cell measurement and switching, is characterized in that, described system comprises: the device of cell measurement and switching and base station,
The device of described cell measurement and switching comprises sectorized antennas, control module and handover module;
Sectorized antennas, for carrying out the reception of downlink data;
Control module, for measuring respectively the Received signal strength of different sectorized antennas, and sends measurement result to base station;
Handover module, for receiving the instruction of base station transmission to carry out cell merge;
Base station, for receiving measurement result, sends instruction to handover module;
Described control module comprises measuring unit and reports unit,
Measuring unit, for measuring respectively the Received signal strength of different sectorized antennas;
Report unit, if wireless remote unit R RU corresponding to the Received signal strength of the different sectorized antennas of UE belongs to same distributed Base Band Unit BBU, then the measurement result of at least two measurement results and cell ID are sent to base station; If the RRU that the Received signal strength of the different sectorized antennas of UE is corresponding does not belong to same BBU, then at least two measurement results and corresponding cell ID are sent to base station.
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| CN201110362935.0A CN103118408B (en) | 2011-11-16 | 2011-11-16 | Method, the Apparatus and system of cell measuring method, cell measurement and switching |
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| CN103118408B true CN103118408B (en) | 2016-02-17 |
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| CN104617995B (en) * | 2014-12-29 | 2018-04-03 | 三维通信股份有限公司 | A kind of indoor DAS system based on day line options resists small uplink signal of base station interference method |
| CN106792951B (en) * | 2015-11-24 | 2020-08-28 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for selecting target base station for handover |
| CN111107596B (en) * | 2019-12-13 | 2022-07-12 | 京信网络系统股份有限公司 | Neighbor cell switching method and device, pico-base station and storage medium |
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| WO2007146685A1 (en) * | 2006-06-06 | 2007-12-21 | Qualcomm Incorporated | Apparatus and method for wireless communication using directional and omni-directional antennas |
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| CN102149097A (en) * | 2010-02-10 | 2011-08-10 | 重庆重邮信科通信技术有限公司 | Method for receiving and sending mobile equipment signal |
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| CN1329781A (en) * | 1998-12-08 | 2002-01-02 | 特利泰尔R&D丹麦有限公司 | Dual antenna system |
| WO2007146685A1 (en) * | 2006-06-06 | 2007-12-21 | Qualcomm Incorporated | Apparatus and method for wireless communication using directional and omni-directional antennas |
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