CN102883439B - The communication means of broadband terminal in discrete spectrum communication system - Google Patents
The communication means of broadband terminal in discrete spectrum communication system Download PDFInfo
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- CN102883439B CN102883439B CN201110196742.2A CN201110196742A CN102883439B CN 102883439 B CN102883439 B CN 102883439B CN 201110196742 A CN201110196742 A CN 201110196742A CN 102883439 B CN102883439 B CN 102883439B
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Abstract
The invention discloses a kind of service communication method of broadband terminal in discrete spectrum communication system, the method is when wide-band terminal needs to carry out business data transmission, base station is this wide-band terminal distribution broadband frequency range, and the identification information of distributed broadband frequency range is handed down to this wide-band terminal by Downlink Control Information instruction; This wide-band terminal migrates to from the resident frequency range of self the broadband frequency range that described broadband frequency range identification information identifies, and at this broadband band transmissions business datum and relevant control signal.Utilize the present invention, discrete spectrum communication system can be enable simultaneously to support narrowband terminal and wide-band terminal, meet respective business demand.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to the communication means of broadband terminal in discrete spectrum communication system.
Background technology
Current 230MHz frequency range is mainly used in data radio station and bears long-range data collection task, can only be used for some simple communications applications because the speed provided is very low, cannot meet intelligent grid and the growing business demand of Sensor Network.According to the planning in national grid future, require to find a kind of new broadband communications technologies, meet the business demand in its distribution automation, load management, power information collection, smart power grid user service, emergency first-aid repair, the large field of special area video monitoring six.
Based on time-division Long Term Evolution (TD-LTE, TimeDivision-LongTermEvolution) the 230MHz discrete spectrum communication system of technology is that the demand provides good solution, this communication system inherits OFDM (OFDM, OrthogonalFrequencyDivisionMultiplexing) in the channel relatively flat of the orthogonal multi-sub carrier transmission uniqueness of technology and the smaller advantage of the intersymbol interference of channel, innovatively play the expansibility of OFDM access (OFDMA) system, frequency selectivity, dispatching flexibility etc., and creationaryly absorb carrier aggregation, the advanced communication theory such as frequency spectrum perception, constitute low-power consumption of new generation, high spectrum utilization, the multi-business communication system flexibly of high reliability.Farthest can meet the business need of power load monitoring system, simultaneously for the planning of national grid next generation network provides solid technological accumulation and Applied D emonstration.
Existing based in the discrete spectrum communication system of TD-LTE, only support the terminal (UE) communication (as 20MHz) identical with bandwidth of cell in a community, can not support that the terminal of different bandwidth (as 5MHz, 10MHz) accesses in the cell simultaneously and communicates.Current discrete spectrum communication system workflow in one cell comprises: start search cell process, resident attaching process, the process monitoring schedule information and follow-up service communication process.UE Stochastic accessing resident frequency range and the frequency range used in follow-up service communication process are identical.But in discrete band communication system, there is the demand that narrowband terminal and wide-band terminal carry out communicating in one cell simultaneously, and the method for prior art cannot address this problem.
Summary of the invention
In view of this, the invention provides a kind of communication means of broadband terminal in discrete spectrum communication system, enable discrete communication system support narrowband terminal and wide-band terminal simultaneously, meet respective business demand.
Technical scheme of the present invention is achieved in that
A kind of service communication method of broadband terminal in discrete spectrum communication system, the method is when wide-band terminal needs to carry out business data transmission, base station is this wide-band terminal distribution broadband frequency range, and the identification information of distributed broadband frequency range is handed down to this wide-band terminal by Downlink Control Information instruction; This wide-band terminal migrates to from the resident frequency range of self the broadband frequency range that described broadband frequency range identification information identifies, and at this broadband band transmissions business datum and relevant control signal.
Preferably, the identification information of described broadband frequency range is: the beginning subband of this broadband frequency range number and number of sub-bands; Or the identification information of described bandwidth frequency range is: each subband number of this broadband frequency range.
Preferably, described wide-band terminal at the concrete grammar of described broadband band transmissions business datum and relevant control signal is: specify subband control channel, conciliate at all the other subband service data transmissions of this broadband frequency range the reference signal called for one in this broadband frequency range.
Preferably, the appointment subband of described control channel is first subband in the frequency range of described broadband.
Preferably, the channel in the appointment subband of described control channel comprises: Physical Control Format Indicator Channel, Physical Downlink Control Channel and Physical Uplink Control Channel.
Preferably, the method comprises for this wide-band terminal distributes taking a step forward of broadband frequency range in base station: base station judges whether for the broadband frequency range of contemporary broadband terminal, if had, to distribute broadband frequency range and perform follow-up flow process for this wide-band terminal according to current resource situation; Otherwise notify that this wide-band terminal continues in resident band transmissions business datum and relevant control signaling.
Preferably, the method comprises further: after described wide-band terminal winding-up transfer of data, discharge described broadband frequency range.
Preferably, the fast Fourier transform FFT that described wide-band terminal uses counts the integral multiple for narrowband terminal FFT used in same communication system counts.
Preferably, described communication system is: orthogonal FDM communication system, fdma communication systems, code division multiple address communication system or TDMA communication system.
Compared with prior art, method of the present invention is when wide-band terminal needs to carry out business data transmission, base station is this wide-band terminal distribution broadband frequency range, wide-band terminal migrates to from the resident frequency range of self the broadband frequency range that described broadband frequency range identification information identifies, at this broadband band transmissions business datum and relevant control signal, thus the broadband resource of discrete communication system can be made full use of, enable discrete communication system support narrowband terminal and wide-band terminal simultaneously, meet respective business demand.
Accompanying drawing explanation
Fig. 1 is the frequency range schematic diagram of broadband of the present invention UE working range;
Fig. 2 is a kind of flow chart of the method for the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
The present invention gives the communication means of wide-band terminal under a kind of discrete spectrum system.Next specific implementation of the present invention is described in detail.
Method of the present invention can support the discrete spectrum communication system of multiple technologies: as orthogonal frequency division multiplexi (OFDM, OrthogonalFrequencyDivisionMultiplexing) communication system, frequency division multiple access (FDMA, FrequencyDivisionMultipleAccess) communication system, code division multiple access (CDMA, CodeDivisionMultipleAccess) communication system or time division multiple access (TDMA, TimeDivisionMultipleAccess) communication system.Embodiment is described for ofdm communication system below.
In the present invention, the resident attaching process of start of broadband UE is identical with the mode of arrowband UE in prior art, random access procedure afterwards also completes identical with the random access procedure of arrowband UE, mainly comprise: to the Reference Signal Received Power (RSRP of the broadcast singal of different bunches, ReferenceSignalReceivingPower) measure, and result is sorted, select RSRP best bunch carry out resident and Stochastic accessing.Fig. 1 is the frequency range schematic diagram of broadband of the present invention UE working range, as shown in Figure 1, this figure comprises three bunches, each bunch comprise arrowband and broadband UE can the frequency range (the nicking part 101,102 and 103 as each bunch) of resident and work, also comprise operable frequency range (blank parts 104,105 and 106 as in each bunch) when only broadband UE carries out service communication.Broadband UE can select one bunch to carry out resident and Stochastic accessing according to preceding method, and now accessed frequency range is in narrowband slice, the nicking part 101,102 and 103 namely in described in Fig. 1 each bunch.
When broadband UE accesses successfully, the process monitoring schedule information is also consistent with the monitoring schedule information process of arrowband UE in current LTE communication system.
The communication process of aforesaid broadband UE, due to identical with the communication process of arrowband UE, is therefore referred to as narrow band mode or list band model herein.When broadband UE needs to carry out business data transmission, then perform method of the present invention, be referred to as broadband mode or many sub-band scheme herein.
Fig. 2 is a kind of flow chart of the method for the invention.See Fig. 2, this flow process comprises:
Step 201, when wide-band terminal needs to carry out business data transmission, base station is that this wide-band terminal distributes broadband frequency range.
In this step, when wide-band terminal needs to carry out business data transmission, need initiating business request, set up radio resource control (RRC, RadioResourceControl) connect, the frequency point information that this process middle width strip UE can report self to support to base station, after base station obtains these frequency point information, distributes the broadband resource of frequency range to this broadband UE.
The identification information of distributed broadband frequency range is handed down to this wide-band terminal by the instruction of a specific Downlink Control Information (DCI, DownlinkControlInformation) by step 202, base station.Herein, this DCI instruction is claimed to be broadband migration instruction, the migration instruction of this broadband comprises base station assigns to the broadband frequency range identification information of this broadband UE, this broadband frequency range mark can represent by beginning subband number and number of sub-bands, also can represent with the subband number that this broadband frequency range is all, described subband number can directly be represented by the frequency of subband.
After step 203, wide-band terminal receive described DCI instruction, migrate to from the resident frequency range of self the broadband frequency range that described broadband frequency range identification information identifies.
Step 204, wide-band terminal, at described broadband band transmissions business datum and relevant control signal, namely carry out business procedure.
Described business procedure specifically comprises up-downgoing scheduling and business data transmission, wherein up-downgoing scheduling needs the control signal of transmitting-receiving to transmit in one of described broadband frequency range appointment subband separately, conciliates at all the other subband service data transmissions of this broadband frequency range the reference signal called.Channel in the appointment subband of described control channel comprises: Physical Control Format Indicator Channel (PCFICH), Physical Downlink Control Channel (PDCCH) and Physical Uplink Control Channel (PUCCH).In the present embodiment, the special subband of all control signals is first subband of described broadband frequency range, and other subband is exclusively used in service data transmission and conciliates the reference signal called.In a further embodiment, the special subband of all control signals also can be other subband of described broadband frequency range, and described business datum is conciliate reference signal other subband outside the special subband of this control signal called and transmitted.
After described business procedure terminates, then base station can discharge described broadband frequency range further, and stop described solution to call the transmission of reference signal, PCFICH signal, PDCCH signal and PUCCH signal, thus base station is allowed these broadband frequency allocations to be used to other broadbands UE.
In another embodiment of the invention, in above-mentioned steps 201, after broadband UE sends service request, according to current resource situation, base station can judge whether that the broadband can supporting contemporary broadband UE is moved further, if supported, be that this broadband UE distributes broadband frequency range, and giving this broadband UE by the identification information of this broadband frequency range by DCI transmitting signaling downwards, this broadband UE enters many sub-band scheme and performs subsequent step of the present invention; If current resource situation does not support that the broadband of contemporary broadband UE is moved, then base station is not that this broadband UE distributes broadband frequency range, continues to perform narrowband operation flow process, under namely broadband UE can be operated in list band model always.
In addition, employ said method of the present invention, arrowband UE and broadband UE can be supported in one cell in discrete spectrum communication system simultaneously, in order to make discrete spectrum OFDM and FDMA communication system allocate resource more easily, in one preferred embodiment of the invention, the fast Fourier transform (FFT, FastFourierTransformation) that described broadband UE uses is counted the integral multiple for UE FFT used in arrowband in same communication system counts.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. a service communication method for broadband terminal in discrete spectrum communication system, is characterized in that,
Adopt the resident and Random Access of narrowband terminal after wide-band terminal start, that selects narrowband slice bunch carries out resident and Stochastic accessing, accesses successfully and is in narrow band mode; Described narrowband slice is that narrowband terminal and wide-band terminal all can the frequency ranges of resident and work;
When wide-band terminal needs to carry out business data transmission, enter broadband mode, base station is this wide-band terminal distribution broadband frequency range, this broadband frequency range is the frequency range of only carrying out service communication for wide-band terminal, and the identification information of distributed broadband frequency range is handed down to this wide-band terminal by Downlink Control Information instruction; This wide-band terminal migrates to from the resident frequency range of self the broadband frequency range that described broadband frequency range identification information identifies, and at this broadband band transmissions business datum and relevant control signal;
Described wide-band terminal at the concrete grammar of described broadband band transmissions business datum and relevant control signal is: specify subband control channel, conciliate at all the other subband service data transmissions of this broadband frequency range the reference signal called for one in this broadband frequency range.
2. method according to claim 1, is characterized in that,
The identification information of described broadband frequency range is: the beginning subband of this broadband frequency range number and number of sub-bands;
Or the identification information of described broadband frequency range is: each subband number of this broadband frequency range.
3. method according to claim 1, is characterized in that, the appointment subband of described control channel is first subband in the frequency range of described broadband.
4. method according to claim 1, is characterized in that, the channel in the appointment subband of described control channel comprises: Physical Control Format Indicator Channel, Physical Downlink Control Channel and Physical Uplink Control Channel.
5. method according to claim 1, it is characterized in that, the method comprises for this wide-band terminal distributes taking a step forward of broadband frequency range in base station: base station judges whether for the broadband frequency range of contemporary broadband terminal, if had, to distribute broadband frequency range and perform follow-up flow process for this wide-band terminal according to current resource situation; Otherwise notify that this wide-band terminal continues in resident band transmissions business datum and relevant control signaling.
6. method according to claim 1, is characterized in that, the method comprises further: after described wide-band terminal winding-up transfer of data, discharge described broadband frequency range.
7. method according to claim 1, is characterized in that, the fast Fourier transform FFT that described wide-band terminal uses counts the integral multiple for narrowband terminal FFT used in same communication system counts.
8. the method according to any one of claim 1 to 7, is characterized in that, described communication system is: orthogonal FDM communication system, fdma communication systems, code division multiple address communication system or TDMA communication system.
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| CN201110196742.2A CN102883439B (en) | 2011-07-14 | 2011-07-14 | The communication means of broadband terminal in discrete spectrum communication system |
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| CN102883439B true CN102883439B (en) | 2016-04-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103347301B (en) * | 2013-07-09 | 2016-04-20 | 深圳供电局有限公司 | A kind of is method and the device of many subbands user terminal distributing radio resource |
| CN106358269B (en) * | 2016-09-30 | 2021-01-19 | 海能达通信股份有限公司 | Cell search method and device for narrowband auxiliary broadband |
| CN108738159B (en) * | 2017-04-13 | 2021-04-16 | 普天信息技术有限公司 | Random access method |
| CN108738134A (en) * | 2017-04-13 | 2018-11-02 | 普天信息技术有限公司 | A kind of time division multiplexing random access resource selection method |
| CN109257819A (en) * | 2017-07-13 | 2019-01-22 | 普天信息技术有限公司 | A kind of indicating means, base station and the user equipment of multi-subband starting DCI |
| CN109548062A (en) * | 2017-08-15 | 2019-03-29 | 普天信息技术有限公司 | DCI transmission method and equipment in a kind of discrete spectrum communication system |
| CN113905451B (en) * | 2017-11-15 | 2022-08-02 | 华为技术有限公司 | Random access method and equipment |
| CN109714100B (en) * | 2017-12-26 | 2021-08-06 | 电子科技大学 | Optical fiber nonlinear crosstalk calculation method for multi-wavelength channel |
| CN110035492A (en) | 2018-01-12 | 2019-07-19 | 华为技术有限公司 | A kind of method, apparatus and system of resource distribution |
| CN110708707B (en) * | 2018-07-09 | 2023-08-08 | 普天信息技术有限公司 | Method and equipment for returning terminal to resident sub-band in private network wireless communication |
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| CN101361339A (en) * | 2006-01-17 | 2009-02-04 | 诺基亚西门子通信有限责任两合公司 | A method of resource allocation in a communication system |
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