CN103856922A - Resource utilization method based on LTE indoor/hotspot enhancement - Google Patents
Resource utilization method based on LTE indoor/hotspot enhancement Download PDFInfo
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- CN103856922A CN103856922A CN201210514818.6A CN201210514818A CN103856922A CN 103856922 A CN103856922 A CN 103856922A CN 201210514818 A CN201210514818 A CN 201210514818A CN 103856922 A CN103856922 A CN 103856922A
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Abstract
Disclosed is a resource utilization method based on LTE indoor/hotspot enhancement. According to the method, a user is informed whether a resource is usable by using a high-level signaling; a macrocell sends system information of a microcell to the user, wherein the system information comprises a bit which is used for informing the user, when the bit value is 0, the user can not use resources of idle synchronizing signals and broadcast messages, and the IE of the microcell can not be used, and when the bit value is 1, the user can use resources of idle synchronizing signals and broadcast messages, and the IE of the microcell can be used. According to the technical scheme, the user is informed with the high-level signaling method, the microcell does not send synchronization PSS and SSS or MIB and SIB information, idle resources on the microcell are utilized for data transmission, the user can learn whether idle symbol resources are usable soon after having access to a system, and then time-frequency resources are effectively utilized.
Description
Technical field
The present invention relates to mobile Internet LTE (Long Term Evolution, Long Term Evolution) technical field, heat do not relate to a kind of mode that uses high-level signaling notify user based on LTE indoor/resource utilization method that focus strengthens.
Background technology
Along with the development of mobile Internet and popularizing of smart mobile phone, data service is exponential increase.For LTE technology, for better capacity is further provided, elevator system performance, in the concentrated region of data business volume, as indoor, focus are disposed low-power " community ", supplementing or strengthening as the large covering of macrocellular.
Be isolated from the outside for indoor, and indoor propagation and covering feature, " community " in covering chamber can adopt the frequency different from macrocell system.
The region covering for existing macrocellular, newly deployed low-power " community " can be only for hoist capacity, and macrocellular is used for providing large covering.Consider that low-power " community " area coverage is little, in order to avoid between low-power " community " as far as possible, and frequent switching between low-power " community " and macro base station, there is company to propose the technical solution that chain of command separates with user's face.Wherein macrocellular is responsible for basic system information, mobile management etc., and low-power " community " is only for transfer of data.
Under this scene, if there is optical fiber to connect (class X2 interface) between low-power " community " and macro base station, the design class of low-power " community " and macro base station and multifrequency point base station seemingly, also can reuse by a lot of technology contents.If concatenation ability is limited between low-power " community " and macro base station, the design of low-power " community " and macro base station with have optical fiber to be connected with a great difference.In LTE, synchronizing information and some system informations are to take fixing running time-frequency resource transmission.In existing standard, the transmission of system information has following several:
1. synchronizing information transmission in existing LTE
Synchronizing signal is divided into PSS and SSS.As shown in Figure 1, take TD-LTE as example: the synchronizing signal of TDD in time domain, PSS signal is positioned at the 1st and the 6th subframe (being special subframe), and SSS signal is positioned at the 0th and the 5th subframe, and more specifically, PSS is arranged in the 3rd symbol of subframe, and SSS is positioned at the 14th symbol; On frequency domain, for various system bandwidth (1.4,3,5,10,15,20MHz), the synchronizing signal all 1.08MHz bandwidth at band occupancy center is transmitted.Wherein synchronizing sequence takies 62 subcarriers, and each reserved 5 subcarriers in both sides, as boundary belt, take 72 subcarriers altogether.
2. broadcast message transmission in existing LTE
In LTE, broadcast comprises the basic configuration information MIB of system and system information SIB.Wherein MIB transmits on PBCH fixed resource.The transmission cycle of PBCH is 40ms, in first subframe of each 10ms radio frames, transmits, and takies 4 continuous OFDM symbols, takies the bandwidth of downstream bands center 1.08MHz on frequency domain, takies altogether 72 subcarriers.SIB transmits on PDSCH by scheduling.MIB is the most basic configuration information of system, as system bandwidth, the indication of PHICH resource etc.The information of SIB transmission is carried out the required system informations such as transfer of data, mobile management for user, as TDD up-downgoing proportioning, Neighboring Cell List etc. information.For Microcell carrier wave, some SIB informational needs transmission, some SIB information no longer needs to transmit (as Neighboring Cell List).PDCCH is SIB scheduling resource, takies PDSCH transmission.
3. system public reference signal
In R11, determine on new carrier wave NCT and do not needed to transmit public reference signal, use CSI-RS to carry out channel estimating and measurement.
In the time of macrocell and small interval synchronization, do not need to transmit synchronizing information; The mode separating with chain of command by user's face, low-power " community " no longer needs to transmit some system informations, originally the temporal frequency resource of these information of transmission is all vacated, and low-power " community " is used different frequencies from grand net, and between grand net, there is not the interference problem of synchronizing signal and system broadcast channel.These running time-frequency resources are effectively utilized, can indoor/focus be realized effectively and being strengthened, and how to allow user know that these resources can use, how to use these resources, become the problem of those skilled in the art's extensive concern.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of based on LTE indoor/resource utilization method in focus enhancing technology, no matter between low-power " community " and macro base station, have non-fiber to connect, the method that this patent proposes is all suitable for.
For achieving the above object, technical scheme provided by the present invention is as follows:
Based on LTE indoor/resource utilization method that focus strengthens, by using the mode of high-level signaling to notify user resources whether can use.
Further, grand (macro) community sends the system information of Microcell (small cell) to user, in described system information, comprise a bit, described bit is used for notifying user, in the time that bit value is 0, user can not use the synchronizing signal that is available and the resource of broadcast message, and the IE of this Microcell can not use; In the time that bit value is 1, user can use the synchronizing signal that is available and the resource of broadcast message, and the IE of this Microcell can use.
Further, described bit is arranged in system information Resource Block 1.
Further, in described system information Resource Block 1, comprise an IE, shown in IE comprise described bit.
Further, user is after connecting system, and the information in read system information resource fast 1, obtains and whether can use the sign resources being available.
Further, dispatched users on the PRB that base station takies at former PSS/SSS, MIB, carries out transfer of data, and the symbol that former CRS is taken, as the symbol of transfer of data, carries out rate-matched, transmission data.
Adopt technique scheme, beneficial effect of the present invention has:
Technical scheme provided by the present invention, mode by high-level signaling is notified user, Microcell does not send synchronous PSS and SSS, do not send MIB and SIB information yet, use the resource being available on Microcell to carry out transfer of data, after subscriber access system, can know that whether the sign resources being available can be used, and effectively utilizes running time-frequency resource.
Accompanying drawing explanation
Fig. 1 is synchronizing information transmission schematic diagram in TD-LTE.
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/resource utilization method that focus strengthens, by using the mode of high-level signaling to notify user resources whether can use.Macrocell sends the system information of Microcell to user, in described system information, comprise a bit, described bit is used for notifying user, in the time that bit value is 0, user can not use the synchronizing signal that is available and the resource of broadcast message, and the IE of this Microcell can not use; In the time that bit value is 1, user can use the synchronizing signal that is available and the resource of broadcast message, and the IE of this Microcell can use.Dispatched users on the PRB that base station takies at former PSS/SSS, MIB, carries out transfer of data, and the symbol that former CRS is taken, as the symbol of transfer of data, carries out rate-matched, transmission data.
Wherein a kind of execution mode is that described bit is arranged in system information Resource Block 1, comprises an IE in described system information Resource Block 1, shown in IE comprise described bit.User is after connecting system, and the information in read system information Resource Block 1, obtains and whether can use the sign resources being available.
Specifically, aspect the utilization of resources, solved two problems, the firstth, how to allow user know that these resources can use, the secondth, how to be suitable for these resources.
For first problem, whether macro base station has the low-power " community " of cooperation, is transparent to user, that is to say user and do not know that low-power " community " is for its service, if but wish that user uses the resource being available on Microcell, for transfer of data, need to notify user.
Whether technical scheme provided by the present invention is used the mode of high-level signaling to notify user, in the system information of the Microcell sending at macrocell, increase a bit or IE and notify the IE of this Microcell of user can use.With at system information Resource Block 1(SystemInformationBlockType1) in a newly-increased bit or IE be designated as example.At system information Resource Block 1(SystemInformationBlockType1) in a newly-increased bit, this bit value is 0 o'clock, expression cannot be used the synchronizing signal that is available and the resource of broadcast message; Bit value is 1 o'clock, represents that user can use the synchronizing signal that is available and the resource of CRS.Or at system information Resource Block 1(SystemInformationBlockType1) a newly-increased IE, as SystemInformationBlockType1-vbx0-IEs, this IE comprises a bit, indicates whether to use the resource being available.User, after connecting system, can read the SystemInformationBlockType1 information of Microcell, thereby terminal knows whether the sign resources that can use these to be available.
For Second Problem, due in existing LTE/LTE-A standard, for PRB corresponding to PSS/SSS, MIB, base station dispatched users not on these PRB, in the time that this carrier wave is synchronizeed with grand sector-carrier, on the carrier wave of Microcell, can send synchronizing signal PSS and SSS, or after the identification of Microcell is further strengthened, consider the detection signal that design is new, Microcell does not send synchronous PSS and SSS.Therefore,, on the Microcell carrier wave that does not send PSS/SSS, MIB, dispatched users on the PRB that base station can take at former PSS/SSS, MIB, carries out transfer of data.
In CA, PCC sector can send by high-rise RRC signaling the broadcast message of SCC.In method provided by the present invention, also can use similar fashion, be that macrocell (macro cell) is upper except sending the broadcast message of oneself, also send the broadcast message of Microcell, on Microcell, no longer need like this to send MIB and SIB information, the resource that former MIB takies is vacated, can be for the transmission of data.
For the PRB of transmission CRS, in prior art, the mode of base station employing rate-matched (rate matching) is that terminal is carried out rate adapted, when terminal receives, can carry out reception & disposal according to the rating matching making a start.Provided by the present invention based on LTE indoor/resource utilization method that focus strengthens, base station no longer needs to carry out rate matching according to the expense of CRS, the symbol that former CRS is taken also, as the symbol of transfer of data, carries out rate-matched, transmission data.
In addition, for system public reference signal, Microcell equally does not need to transmit public reference signal yet.
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 (6)
- Based on LTE indoor/resource utilization method that focus strengthens, it is characterized in that: by using the mode of high-level signaling to notify user resources whether can use.
- According to claim 1 based on LTE indoor/focus strengthen resource utilization method, it is characterized in that: macrocell sends the system information of Microcell to user, in described system information, comprise a bit, described bit is used for notifying user, in the time that bit value is 0, user can not use the synchronizing signal that is available and the resource of broadcast message, and the IE of this Microcell can not use; In the time that bit value is 1, user can use the synchronizing signal that is available and the resource of broadcast message, and the IE of this Microcell can use.
- According to claim 1 based on LTE indoor/focus strengthen resource utilization method, it is characterized in that: described bit is arranged in system information Resource Block 1.
- According to claim 3 based on LTE indoor/focus strengthen resource utilization method, it is characterized in that: in described system information Resource Block 1, comprise an IE, shown in IE comprise described bit.
- According to described in claim 3 or 4 based on LTE indoor/focus strengthen resource utilization method, it is characterized in that: user is after connecting system, and the information in read system information resource fast 1, obtains and whether can use the sign resources being available.
- According to claim 5 based on LTE indoor/focus strengthen resource utilization method, it is characterized in that: dispatched users on the PRB that base station takies at former PSS/SSS, MIB, carry out transfer of data, the symbol that former CRS is taken is as the symbol of transfer of data, carry out rate-matched, transmission data.
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| WO2018121653A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Communication method and communication device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018121653A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Communication method and communication device |
| CN110178334A (en) * | 2017-01-10 | 2019-08-27 | 高通股份有限公司 | The downlink channel rate-matched of synchronization signal block transmission in new radio communication system |
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| CN110178334B (en) * | 2017-01-10 | 2022-05-24 | 高通股份有限公司 | Method and apparatus for downlink channel rate matching for synchronization signal block transmission |
| WO2018145651A1 (en) * | 2017-02-11 | 2018-08-16 | 华为技术有限公司 | Data transmission method, device and system |
| CN110268728A (en) * | 2017-02-11 | 2019-09-20 | 华为技术有限公司 | Data transmission method, apparatus and system |
| CN110268728B (en) * | 2017-02-11 | 2021-06-08 | 华为技术有限公司 | Data transmission method, device and system |
| US11528690B2 (en) | 2017-02-11 | 2022-12-13 | Huawei Technologies Co., Ltd. | Data communication method, apparatus, and system |
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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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