CN103856953A - Indoor/hot spot enhancement method based on LTE - Google Patents
Indoor/hot spot enhancement method based on LTE Download PDFInfo
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- CN103856953A CN103856953A CN201210514819.0A CN201210514819A CN103856953A CN 103856953 A CN103856953 A CN 103856953A CN 201210514819 A CN201210514819 A CN 201210514819A CN 103856953 A CN103856953 A CN 103856953A
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Abstract
Disclosed is an indoor/hot spot enhancement method based on LTE. A small cell is added and used for supplementary or enhancement of an extensive-coverage macro cell, and the small cell is connected with a macro base station of a macro cell system through a class X2 interface. The small cell and macro cell pilot frequency are adopted for deployment, the macro cell provides basic data services and control face services, and the small cell provides higher data speed. The small cell has the advantages of having hot spot coverage and improving system throughput, and has the certain function of unloading macro cell loads.
Description
Technical field
The present invention relates to LTE (Long Term Evolution, the Long Term Evolution) technical field of mobile Internet, particularly relate to a kind of based on LTE indoor/Enhancement Method of focus.
Background technology
Along with the development of mobile Internet and popularizing of smart mobile phone, data service is exponential increase.A large amount of statisticses show: 70% of 60% and data service of current mobile operator mobile voice service occurs in indoor; Future Data business is estimated to increase by 1000 times in 10 years, and wherein indoor data business volume will account for 90% of total traffic.Therefore, the coverage mode of conventional cellular network is for supporting the bottleneck indoor and development of focus wireless data service to become increasingly conspicuous, and the network Development of mobile operator faces all challenges: (1) traditional 2G, 3G network wireless access capacity limitation manifest gradually; (2) site, antenna feeder resource acquisition difficulty increase day by day, and the station spacing of dense city approaches theoretical limit, are difficult to support the intensive deployment of legacy cellular macro base station; (3) Disposition & Operation of macro base station are with high costs, and the networking mode of newly-increased macro base station dilatation is hard to carry on.
In order to maintain health and the sustainable development of industrial chain, how the development of mobile communications network must consider constantly to reduce by the innovation of the aspects such as lifting, deployment way and the operation way of network technology ability networking, the Disposition & Operation cost of network.
There are two classes: WiFi and LTE Microcell for the solution of focus and indoor data service development at present.Wherein WiFi has formed complete industrial chain, and WiFi standard 802.11ac/ad standardization effort of new generation completes substantially, support more high bandwidth, peak rate can reach 1Gbps, but because licensed band is exempted from use, node deployment randomness is stronger, and operator cannot accomplish controlled; Also there is larger deficiency in this external interference management, mobile management and user QoS support aspect.LTE, by the use of the site type such as Pico and Home eNodeB, can dispose LTE as required flexibly in the region of service set, thereby realizes the dilatation as required of network capacity.Industry is referred to as Small Cell(Microcell the Pico base station defining in standard and Home eNodeB at present).
Because the deployment of Microcell is supported interference management, node self-starting and shares core net and network management system with cellular network, make its deployment relative easy with management, become and solved main flow direction following indoor and hot spot data service coverage and capacity.But radio-frequency (RF) index, with respect to macro base station, has mainly been relaxed in Microcell at present, has reduced transmitting power, at performance, cost, controlled, backward compatibility, the aspects such as network organizing still need to be optimized and strengthen.
Summary of the invention
Unresolved above-mentioned technical problem, the invention provides a kind of by arrange Microcell strengthen based on LTE indoor/method of focus.
For achieving the above object, technical scheme provided by the present invention is as follows:
Based on LTE indoor/Enhancement Method of focus, supplement or strengthen for the large macrocell system covering increases Microcell, between described Microcell and the macro base station of macrocell system, be connected by class X2 interface.
Further, the frequency domain of described Microcell is lower than the frequency domain of macro base station.
Further, the macro base station in described macrocell system provides basic data service and chain of command service, and user's transfer of data is responsible in described Microcell.
Further, for the user of new access, complete after access procedure, macro base station judges whether user is the user that Microcell can be served, and if so, increases user profile by class X2 interface notice Microcell, and follow-up scheduling is carried out in described Microcell;
To the user in sector, macro base station is carrying out after mobility operation, increases the user profile that enters the user profile of Microcell or deletion and leave Microcell by class X2 interface notice Microcell;
For the user who leaves system, complete and leave after registration at macro base station, delete the user profile of the system of leaving by class X2 interface notice Microcell.
Further, described user profile comprises the ID of identifying user.
Further, described macro base station maintains a table, and which user of described table record is Microcell user.
Further, described macro base station has Microcell near notifying user.
Further, described macro base station is by RRC signaling user.
Further, described user distinguishes Microcell and alien-frequency district.
Further, the method that described user distinguishes Microcell and alien-frequency district is for system information block defines new information unit, the physical label (phyCellID) that described new information unit comprises Microcell and the carrier frequency of Microcell.
Adopt technique scheme, beneficial effect of the present invention has:
Adopt Microcell and macrocell alien frequencies to dispose, macrocell provides basic data service and chain of command service, and Microcell provides higher data rate.And Microcell not only has focus and covers, and improves the advantage of throughput of system, also has the effect of certain unloading macrocell load.
Brief description of the drawings
Fig. 1 is the schematic diagram of embodiments of the invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Based on LTE indoor/Enhancement Method of focus, the lower powered Microcell of deployed in areas covering at existing macrocellular, as the supplementing or strengthen of the large covering of macrocellular, is connected by class X2 interface between described Microcell and the macro base station of macrocell system.The frequency domain of described Microcell is lower than the frequency domain of macro base station.Macro base station in described macrocell system provides basic data service and chain of command service, and user's transfer of data is responsible in described Microcell.
Aspect user management: for the user of new access, complete after access procedure, macro base station judges whether user is the user that Microcell can be served, if so, increase user profile by class X2 interface notice Microcell, follow-up scheduling is carried out in described Microcell; To the user in sector, macro base station is carrying out after mobility operation, increases the user profile that enters the user profile of Microcell or deletion and leave Microcell by class X2 interface notice Microcell; For the user who leaves system, complete and leave after registration at macro base station, delete the user profile of the system of leaving by class X2 interface notice Microcell.Wherein, user profile comprises the ID of identifying user.
In the time that the signal quality of Microcell exceeds the threshold value of certain setting compared with macrocell signal quality, or the signal quality of Microcell is during higher than certain threshold value, the cell reselection of (condition that adds of Microcell is different from inter-frequency(alien frequencies), therefore the two generally can not use identical threshold value) or other need situation time, macro base station is by having Microcell near RRC signaling user, user distinguishes Microcell and alien frequencies (inter-frequency) community, according to different system information blocks (System Information blocks), report according to different Event triggered measurements.
Fig. 1 is one embodiment of the invention schematic diagram, as shown in Figure 1, between Microcell and macro base station, non-fiber is connected, and between its station, transmission is restricted, Microcell and macro base station use the independent scheduling of different mark (Cell ID), and Microcell and macro base station part adopt class X2 interface transmission information.Chain of command separates with user's face, macro base station is responsible for the operation of the chains of command such as mobile management, and Microcell is responsible for user's transfer of data specially, and the position of macro base station and Microcell is different, for the user of new access, complete after access procedure, according to certain principle, macro base station judges whether user is the user that Microcell can be served, if,, by class X2 interface, notice Microcell, so that follow-up scheduling is carried out in Microcell.Class X2 interface is uploaded carry information: the ID that increases user, identifying user; To the user in sector, macro base station is carrying out, after mobility operation (as switched), need to notifying which user of Microcell to leave Microcell, and which user enters Microcell.Thereby now, macro base station, by class X2 interface, maybe by the Microcell for user's service, transmits the information that increases user or delete user to the former Microcell for user's service.Class X2 interface is uploaded carry information: the ID that deletes user, identifying user; For the user's (as shutdown) who leaves system, complete after closedown register at macro base station, by class X2 interface, to the Microcell for this user's service, user profile is deleted in transmission.Class X2 interface is uploaded carry information: the ID that deletes user, identifying user.
And in macro base station, maintain a table that records Microcell user, so that macro base station is weighed in the time specifically dispatching.In system, for avoiding user's blind search, macrocell is by having Microcell near RRS signaling user, frequency point information etc.
In LTE system, definition has multiple system information blocks (System information block, be called for short SIB), user is respectively fundamental system information, same (intra-frequency) other cell informations, other cell informations of alien frequencies (inter-frequency), other wireless access (RAT (inter-RAT)) cell information frequently, so that can carry out cell reselection according to these information.Also definition has multiple events (EVENT), and user searches after other cell signals according to system information block (SIB information), according to trigger conditions, determines whether report that (meet trigger conditions, terminal measurement reports; Otherwise, do not report).Following is the event (EVENT) defining in existing LTE/LTE-Advanced:
-event A1:Serving becomes better than threshold(Serving cell is better than threshold value)
-event A2:Serving becomes worse than threshold(Serving cell is lower than threshold value)
-event A3:Neighbour becomes offset better than PCell(neighbor cell is better than main Serving cell, and concrete difference is greater than deviant)
-event A4:Neighbour becomes better than threshold(neighbor cell is better than threshold value)
The main Serving cell of-event A5:PCell becomes worse than threshold1 and neighbor becomes better than threshold2(is lower than threshold value 1, and neighbor cell is better than threshold value 2)
-event A6:Neighbour becomes offset better than SCell(neighbor cell is better than auxiliary community, and concrete difference is greater than deviant)
The neighbor cell of other RAT of-event B1:Inter RAT neighbour becomes better than threshold(is better than threshold value)
The main Serving cell of-event B2:PCell becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2(is better than threshold value 2 lower than the neighbor cell of threshold value 1 and other RAT)
In general, the condition that adds of Microcell can adopt the signal quality of Microcell to exceed certain threshold value (as event A3) than with respect to the signal quality ratio of macrocell, also can be that the signal quality of Microcell is higher than certain threshold value (as event A4), also can be other situations, it is to be noted, adding or removing different from the cell reselection object of alien frequencies due to Microcell, therefore the threshold value difference of the two, select different threshold values judge and report, that is to say that user needs to distinguish Microcell and alien-frequency district.This differentiation can be by defining new information unit (System Information Block Type X) and realize for system information block (System information block), as information unit 14(System Information Block Type 14) inclusion information has Physical Cell Identifier (phyCell ID) and Microcell carrier frequency.For Microcell and alien-frequency district, user reports according to different system information blocks and different Event triggered measurements.
Itself has not needed mobile management Microcell of the present invention, does not therefore need to transmit the information that mobile management is relevant, saves signaling consumption.
For ascending control channel, LTE/LTE-Advanced ascending control channel transmits resource request, CSI feedback information, AN feedback information etc.In Intra-site CA, the CC taking is semi-static configuration.Consider that macrocell and Microcell are in different geographical position, the present invention proposes CSI feedback channel, AN feedback information corresponding on the carrier frequency of Microcell and transmits on up-link carrier corresponding to Microcell, Microcell directly receives these information, has reduced signaling consumption mutual between Microcell and macrocell.Consider that macrocell and Microcell are simultaneously for user provides data, services, the present invention proposes ascending resource request instruction and transmit on macrocell carrier wave.Coordinate to determine concrete scheduling by macrocell and Microcell.RSRP, RSRQ only report at the up frequency of macrocell, and macrocell is responsible for mobility related work.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
- Based on LTE indoor/Enhancement Method of focus, it is characterized in that: supplement or strengthen for the large macrocell system covering increases Microcell, between described Microcell and the macro base station of macrocell system, being connected by class X2 interface.
- According to claim 1 based on LTE indoor/Enhancement Method of focus, it is characterized in that: the frequency domain of described Microcell is lower than the frequency domain of macro base station.
- According to claim 2 based on LTE indoor/Enhancement Method of focus, it is characterized in that: the macro base station in described macrocell system provides basic data service and chain of command service, the higher transfer of data of user in coverage is responsible in described Microcell.
- According to claim 3 based on LTE indoor/Enhancement Method of focus, it is characterized in that:For the user of new access, complete after access procedure, macro base station judges whether user is the user that Microcell can be served, and if so, increases user profile by class X2 interface notice Microcell, follow-up scheduling is carried out in described Microcell;To the user in sector, macro base station is carrying out after mobility operation, increases the user profile that enters the user profile of Microcell or deletion and leave Microcell by class X2 interface notice Microcell;For the user who leaves system, complete and leave after registration at macro base station, delete the user profile of the system of leaving by class X2 interface notice Microcell.
- According to claim 4 based on LTE indoor/Enhancement Method of focus, it is characterized in that: described user profile comprises the ID of identifying user.
- According to claim 4 based on LTE indoor/Enhancement Method of focus, it is characterized in that: described macro base station maintains a table, which user of described table record is Microcell user.
- According to claim 4 based on LTE indoor/Enhancement Method of focus, it is characterized in that: described macro base station has Microcell near notifying user.
- According to claim 4 based on LTE indoor/Enhancement Method of focus, it is characterized in that: described macro base station is by RRC signaling user.
- According to claim 3 based on LTE indoor/Enhancement Method of focus, it is characterized in that: described user distinguishes Microcell and alien-frequency district.
- According to claim 9 based on LTE indoor/Enhancement Method of focus, it is characterized in that: the method that described user distinguishes Microcell and alien-frequency district is for system information block defines new information unit, the physical label that described new information unit comprises Microcell and the carrier frequency of Microcell.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104244330A (en) * | 2014-10-10 | 2014-12-24 | 福建三元达通讯股份有限公司 | Method for balancing load of EPC (extended parity checking) gateway |
| CN104486768A (en) * | 2014-12-02 | 2015-04-01 | 中国联合网络通信集团有限公司 | Method and device for carrying out network deployment |
| CN106937342A (en) * | 2015-12-31 | 2017-07-07 | 电信科学技术研究院 | A kind of motion management method and equipment |
| CN108449454A (en) * | 2018-03-30 | 2018-08-24 | 广东合正网络技术有限公司 | Can plug WIFI hot spot module the LTE verbal systems with GSM and VOLTE call functions |
| WO2018184201A1 (en) * | 2017-04-07 | 2018-10-11 | 华为技术有限公司 | Base station function deployment method and device |
| US10440696B2 (en) | 2015-10-22 | 2019-10-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting feedback information, terminal equipment and base station |
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| CN102348244A (en) * | 2010-08-03 | 2012-02-08 | 华为技术有限公司 | Cellular communication system, method for inter-cell handover of terminal and macro base station |
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- 2012-12-04 CN CN201210514819.0A patent/CN103856953A/en active Pending
Patent Citations (2)
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| CN102123489A (en) * | 2010-01-08 | 2011-07-13 | 电信科学技术研究院 | Method, device and system for adjusting uplink power of micro base station |
| CN102348244A (en) * | 2010-08-03 | 2012-02-08 | 华为技术有限公司 | Cellular communication system, method for inter-cell handover of terminal and macro base station |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104244330A (en) * | 2014-10-10 | 2014-12-24 | 福建三元达通讯股份有限公司 | Method for balancing load of EPC (extended parity checking) gateway |
| CN104244330B (en) * | 2014-10-10 | 2017-08-25 | 福建三元达科技有限公司 | A kind of method of balance EPC gateway loads |
| CN104486768A (en) * | 2014-12-02 | 2015-04-01 | 中国联合网络通信集团有限公司 | Method and device for carrying out network deployment |
| US10440696B2 (en) | 2015-10-22 | 2019-10-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for transmitting feedback information, terminal equipment and base station |
| CN106937342A (en) * | 2015-12-31 | 2017-07-07 | 电信科学技术研究院 | A kind of motion management method and equipment |
| CN106937342B (en) * | 2015-12-31 | 2019-07-05 | 电信科学技术研究院 | A kind of motion management method and equipment |
| WO2018184201A1 (en) * | 2017-04-07 | 2018-10-11 | 华为技术有限公司 | Base station function deployment method and device |
| US11109450B2 (en) | 2017-04-07 | 2021-08-31 | Huawei Technologies Co., Ltd. | Base station function deployment method and device |
| CN108449454A (en) * | 2018-03-30 | 2018-08-24 | 广东合正网络技术有限公司 | Can plug WIFI hot spot module the LTE verbal systems with GSM and VOLTE call functions |
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Owner name: ZHANXUN COMMUNICATION (SHANGHAI) CO. LTD. Effective date: 20141015 |
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Effective date of registration: 20141015 Address after: 100191 Haidian District, North Garden Road, No. 52 Telecommunications Research Institute, block B, level 6, Beijing Applicant after: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology Applicant after: Zhanxun Communication (Shanghai) Co., Ltd. Address before: 100191 Haidian District, North Garden Road, No. 52 Telecommunications Research Institute, block B, level 6, Beijing Applicant before: Research Institute of Telecommunications Transmission, Ministry of Industry and Information Technology |
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Application publication date: 20140611 |