CN101626577A - Extended broadcast channel of communication system, extended network equipment and extended terminal equipment - Google Patents
Extended broadcast channel of communication system, extended network equipment and extended terminal equipment Download PDFInfo
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Abstract
The invention discloses an extended broadcast channel of a communication system, extended network equipment thereof and extended terminal equipment thereof, which enable a novel system to have sufficient downward compatibility for an old system and simultaneously meet the requirement of the novel system on more information transmission. The invention adopts the technical scheme that the extended broadcast channel comprises a main frequency band broadcast channel and other frequency band broadcast channels, wherein the main frequency band broadcast channel contains primary LTE system information and working frequency point, bandwidth and working mode information of other frequency bands; and the other frequency band broadcast channels contain working frequency point and bandwidth information of a main frequency band and system information related to the frequency band. The invention is applied in the field of mobile communication.
Description
Technical field
The present invention relates to a kind of broadcast channel of expansion and the network equipment and the terminal equipment of expansion, relate in particular in a kind of wireless communication system by the broadcast channel of the multiband system of primal system expansion and the network equipment and the terminal equipment of expansion.
Background technology
At present, mobile radio system develops to broadband, portable direction, and communication terminal has been proposed high data bandwidth, low complex degree, low battery power consumption, and the requirement of spectral efficient.The use of OFDM/OFDMA technology has reduced the implementation complexity of wide-band communication system.
Orthogonal frequency division multiplexi, promptly the OFDM technology has been acknowledged as the first-selected transmission technology that surpasses three generations and four-tape WiMAX mobile communication.(Frequency division multiplex access FDMA), has just constituted the orthogonal frequency division multiplexing multiple access technology, i.e. the OFDMA technology at the multiplexing multiple access in the basic enterprising line frequency territory of OFDM.In common OFDMA technology, whole communication bandwidth is divided into many subcarriers, and it is right that each subcarrier can be distributed to certain sender-receiver separately, can be used for point-to-multipoint (point to multipoint, PMP) or point-to-point (point to point, P2P) communication system.Common cellular communication system is the communication system of a point-to-multipoint, single sender (such as the base station) can be simultaneously to one or more receivers (such as mobile phone) transmission information, one or more senders (such as mobile phone) also can be simultaneously to single receiver (such as the base station) transmission information, wherein a plurality of receivers or a plurality of sender take different subcarrier allocation orthogonal on the frequency domain respectively, become the OFDM/OFDMA system.The Long Term Evolution of typical application such as 3GPP (Long term evolution, LTE) down link of system.
ITU-R sends circular in February, 2008 to various countries, to various countries and the collection IMT-Advanced (2006, ITU-R is with B3G technology called after IMT-Advanced technology) of each standardization body technology motion.
In March, 2007, the Ministry of Information Industry has set up IMT-Advanced propelling group, and one of main task of this propelling group is exactly to advance the smooth evolution of TD-SCDMA in each International Standards Organization.The propelling group is just towards national enterprise, colleges and universities and the collection IMT-Advanced of research institution candidate technologies at present.
IMT-Advanced is defined as follows: the IMT-Advanced system is the mobile system that has above the new ability of IMT-2000 ability.This system can provide telecommunication service widely: by the mobile service based on the advanced person who wraps transmission that increases day by day that moves and fixed network is supported.
The support of IMT-Advanced system from low to high ambulant application and the data rate of wide range, satisfy user under the multiple user environment and professional demand.The IMT-Advanced system also has the ability of the high-quality multimedia application that remarkable lifting QoS is provided under wide range of services and platform.
The key characteristic of IMT-Advanced comprises: keeping under the cost-efficient condition, supporting to reach worldwide highly versatile on the basis of serving widely and using flexibly; Support the ability of IMT business and fixed network business; High-quality mobile service; User terminal is fit to the whole world to be used; Friendly application, service and equipment; Worldwide roaming capacity; The peak rate that strengthens is new professional and use to support, for example multimedia (need support 100Mbps under high mobility, Hypomobility is supported 1Gbps down).
Because IMT-Advanced is defined as of LTE system by 3GPP and seamlessly transits.Be the LTE terminal need can be in the IMT-Advanced network operate as normal.So just need dominant frequency band of definition, wherein signal mode is consistent with LTE.A concrete example is seen Fig. 1.
Among Fig. 1, there are a master tape wide (original system bandwidth) and two spread bandwidths.Wherein, in order to make the LTE terminal can effectively insert expanding system, signal mode was consistent with LTE in master tape was wide.
The LTE system has defined 6 kinds of down channels at present: Physical Downlink Shared Channel PDSCH, Physical Broadcast Channel PBCH, Physical Multicast Channel PMCH, Physical Control Format Indicator Channel PC-FICH, physical downlink control channel PDCCH and synchronizing channel (SCH, Synchronization Channel).
System has also defined 3 kinds of uplink physical channels: Physical Random Access Channel PRACH, Physical Uplink Shared Channel PUSCH, Physical Uplink Control Channel PUCCH.
The Cell searching of LTE system need be supported the operation of 1.25-20MHz bandwidth.The channel that can be used for Cell searching comprises synchronizing channel (SCH), broadcast channel (BCH), and SCH is used for obtaining downlink system clock and Frequency Synchronization, and BCH then is used for obtaining the customizing messages of sub-district.In addition, reference signal also may be used to a part of cell search process.
Generally speaking, the UE information that needs to obtain in cell search process comprises: the CP length of the subframe at symbol clock and frequency information, bandwidth of cell, sub-district ID, frame clock information, the many antenna configurations in sub-district, BCH bandwidth and SCH and BCH place.
Sub-district ID can directly detect and promptly map directly to sub-district ID by SCH, and the detection of ID group promptly determine that by SCH ID organizes, and then determine concrete sub-district ID by reference symbol and BCH by directly detecting or ID group detection acquisition.The BCH bandwidth then can directly be shone upon by bandwidth of cell, or obtains (CP length also can obtain by blind Detecting) by UE by blind Detecting.
Radio frames may transmission primaries SCH and BCH, also may transmit repeatedly.SCH is also not necessarily the same with BCH quantity, differs and establish a capital and then BCH in each SCH back.The interval of SCH and should fix in the position of subframe, BCH is positioned at the fixedly relative position (if there is a BCH this SCH back) behind the SCH.To the TDD system, a radio frames comprises a plurality of SCH/BCH and may cause extra influence to frame structure.To the TDDLTE system based on the LCR-TDD frame structure, Cell searching is similar with LCR-TDD, and promptly SCH transmits by DwPTS, and BCH transmits by TSO.
Aspect frequency-domain structure, SCH is placed in the center of cell system bandwidth, and bandwidth is decided to be (at least to initial access) 1.25MHz.BCH also sends at the center of system bandwidth, and primary bandwidth also is 1.25MHz.For the system of bandwidth above 5MHz, except 1.25MHz, BCH also might adopt bigger bandwidth.In this case, the transmission bandwidth that need notify UE BCH to adopt by SCH.No matter adopt which kind of bandwidth, the middle body that UE must only rely on system bandwidth obtains sub-district ID, to realize very fast Cell searching.
In order to improve the reliability of SCH and BCH, considering these two kinds of channels are adopted transmit diversity techniques.In the configuration aspects of SCH signal, two kinds of selections are arranged: the SCH of the SCH of classification (Hierarchical) and not classification (Non-hierarchical).For the SCH of classification, system sends 2 or 3 SCH signals, and the 1st SCH signal only is used for acquisition time and Frequency Synchronization, and this signal is identical to each sub-district, or has only a few selection.The 2nd SCH signal is different to each sub-district, carries sub-district I D or cell set ID.If the 2nd SCH signal only carries cell set ID, then the common reference symbol of available cell obtains concrete sub-district ID.If there be not the 2nd SCH signal, the public reference signal that then can directly pass through the sub-district obtains complete sub-district ID.For the SCH signal that is regardless of grade, the SCH signal is different (may take different sub carrier) to each sub-district, directly carries sub-district ID or cell set ID.
Selecting classification still is the non-graded Cell searching, needs to consider following problem: the search time under presence of intercell interference and frequency departure environment; Expense (being extra transmitted power and the running time-frequency resource that is consumed); The UE complexity.Present studies show that, (SNR＜OdB), hierarchical search can be realized searching for shorter search time than non-graded in low SNR scope; And in high SNR scope, the non-graded search is shorter than the search time of hierarchical search performance.
Broadcast channel is a common downlink channel, is used to transmit the sub-district essential information.Terminal is demodulating the SCH channel, behind the acquisition sub-district ID, carries out the BCH demodulation and obtains the cell configuration situation.For the LTE system, BCH carries out radio-cell mapping with other channels, so the change of the used radio-cell of BCH can the change system in the mapping mode of all terminals.
The IMT-Advanced system is owing to having increased reason such as system bandwidth, the inevitable BCH greater than LTE of BCH.And owing to above-mentioned frequency band division reason, the processing of BCH also is not quite similar on different frequency bands.Consider compatibility, need a kind of feasible scheme make the length of BCH strengthen, simultaneously the LTE terminal can be in each bandwidth operate as normal.
Summary of the invention
The objective of the invention is to address the above problem, a kind of expansion broadcast channel of communication system is provided, expanded the broadcast channel of original system, made new system have sufficient downward compatibility, satisfied the needs of the more information transmission of new system simultaneously for old system.
Another object of the present invention is to provide a kind of network equipment of expansion, corresponding to the expansion broadcast channel of above-mentioned communication system.
A further object of the present invention has been to provide a kind of terminal equipment of expansion, corresponding to the expansion broadcast channel of above-mentioned communication system.
Technical scheme of the present invention is: the present invention has disclosed a kind of expansion broadcast channel of communication system, comprise dominant frequency band broadcast channel and other frequency band broadcast channels, wherein this dominant frequency band broadcast channel comprises working frequency points, bandwidth and the mode of operation information of original LTE system information and other frequency bands, and these other frequency band broadcast channels comprise the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band.
The expansion broadcast channel of above-mentioned communication system, wherein, this dominant frequency band broadcast channel comprises the dominant frequency band broadcast channel of original dominant frequency band broadcast channel and expansion, wherein this original dominant frequency band broadcast channel is used to transmit original LTE system information, and the dominant frequency band broadcast channel of this expansion is used to transmit working frequency points, bandwidth and the mode of operation information of other frequency bands.
The expansion broadcast channel of above-mentioned communication system, wherein, the dominant frequency band broadcast channel of this original dominant frequency band broadcast channel and this expansion is the agreement relation on time-frequency resource allocating.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels transmit the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band by the running time-frequency resource of other original frequency band broadcast channels.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels offer the LTE system terminal and use.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels do not offer the LTE system terminal and use.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels are divided into other original frequency band broadcast channels and other frequency band broadcast channels of expansion, by the running time-frequency resource transmission dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band of the running time-frequency resource of other original frequency band broadcast channels and other frequency band broadcast channels of distributing to expansion.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels offer the LTE system terminal and use.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels do not offer the LTE system terminal and use.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels transmit the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band by new running time-frequency resource.
The expansion broadcast channel of above-mentioned communication system, wherein, these other frequency band broadcast channels do not offer the LTE system terminal and use.
The present invention has also disclosed a kind of network equipment of expansion, comprising:
The broadcast channel information mapping block of LTE system is finished the Radio Resource mapping and the output of the broadcast channel of LTE system;
Expansion broadcast channel information mapping block is finished the Radio Resource mapping and the output of expansion broadcast channel;
The OFDM modulation module receives the output of broadcast channel information mapping block of this LTE system and the output of this expansion broadcast channel information mapping block, finishes the OFDM modulation function and the output of all downstream signals;
Radio frequency sending set receives the output of this OFDM modulation module, and baseband signal is converted into radiofrequency signal and output;
Antenna receives the output of this radio frequency sending set, finishes radiofrequency signal and outwards launches.
The present invention has disclosed a kind of terminal equipment of expansion in addition, comprising:
Antenna is finished the reception and the output of radiofrequency signal aerial signal;
The OFDM demodulation module receives the output of this antenna, finishes and exports after radiofrequency signal is converted into baseband signal;
The broadcast channel information of LTE system is separated mapping block, receives the output of this OFDM demodulation module, finishes the Radio Resource of the broadcast channel of LTE system and separates the output of mapping back;
The expansion broadcast channel information is separated mapping block, receives the output of this OFDM demodulation module, finishes the Radio Resource of expansion and separates the output of mapping back.
The present invention contrasts prior art following beneficial effect: the present invention is by expansion main channel broadcast channel and other frequency band broadcast channels, make the main channel broadcast channel comprise the original LTE system information and the working frequency points of other frequency bands, bandwidth and mode of operation information, and other frequency band broadcast channels comprise the working frequency points of the dominant frequency band system information relevant with bandwidth information and this frequency band, the broadcast channel of this time-frequency resource allocating has been expanded the broadcast channel of original system, make new system have sufficient downward compatibility, satisfied the needs that new system more information is transmitted simultaneously for legacy system.
Description of drawings
Fig. 1 is the schematic diagram of the frequency band pattern of existing IMT-Advanced system.
Fig. 2 is the schematic diagram of first embodiment of the expansion broadcast channel of communication system of the present invention.
Fig. 3 is the schematic diagram of second embodiment of the expansion broadcast channel of communication system of the present invention.
Fig. 4 is the schematic diagram of the 3rd embodiment of the expansion broadcast channel of communication system of the present invention.
Fig. 5 is the structural representation of embodiment of the network equipment of expansion of the present invention.
Fig. 6 is the structural representation of embodiment of the terminal equipment of expansion of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Expansion broadcast channel for communication system of the present invention, dominant frequency band broadcast channel (dominant frequency band BCH) and other frequency band broadcast channels (other frequency bands BCH) of being divided into system, wherein dominant frequency band broadcast channel comprises working frequency points, bandwidth and the mode of operation information of original LTE system information and other frequency bands, and other frequency band broadcast channels comprise the working frequency points system information relevant with bandwidth information and this frequency band of dominant frequency band.
First embodiment of expansion broadcast channel
Fig. 2 shows first embodiment of the expansion broadcast channel of communication system of the present invention.See also Fig. 2, the expansion broadcast channel of communication system of the present invention is divided into dominant frequency band broadcast channel and other frequency band broadcast channels of system, and wherein dominant frequency band broadcast channel comprises the dominant frequency band broadcast channel (the dominant frequency band BCH of expansion) of original dominant frequency band broadcast channel (original dominant frequency band BCH) and expansion.Original dominant frequency band broadcast channel is used to transmit former LTE system information.The dominant frequency band broadcast channel of expansion is to use part radio block (RB, the Radio Block) resource in the original PDSCH to transmit working frequency points, bandwidth and the mode of operation information of other frequency bands.For the resource of the dominant frequency band broadcast channel of distributing to expansion, system no longer distributes to other signals and uses.The dominant frequency band broadcast channel of expansion and the original dominant frequency band broadcast channel agreement relation that is assigned as on running time-frequency resource.For example, the subframe of original dominant frequency band broadcast channel is also launched the main channel broadcast channel of expansion simultaneously, and the main channel broadcast channel of emission expansion is to utilize and the original same subcarrier emission of dominant frequency band broadcast channel.
Simultaneously, for other frequency band broadcast channels, by the running time-frequency resource transmission dominant frequency band working frequency points system information relevant of other original frequency band broadcast channels with bandwidth information and this frequency band.For other frequency band broadcast channels in the present embodiment, can offer the LTE system terminal and use, that is the LTE system terminal can not add the use of change; Also can not offer the LTE system terminal and use, that is offer new system terminal use.
Second embodiment of expansion broadcast channel
Fig. 3 shows second embodiment of the expansion broadcast channel of communication system of the present invention.See also Fig. 3, the expansion broadcast channel of communication system of the present invention is divided into dominant frequency band broadcast channel and other frequency band broadcast channels of system, and wherein dominant frequency band broadcast channel comprises the dominant frequency band broadcast channel (the dominant frequency band BCH of expansion) of original dominant frequency band broadcast channel (original dominant frequency band BCH) and expansion.Original dominant frequency band broadcast channel is used to transmit former LTE system information.The dominant frequency band broadcast channel of expansion is to use part radio block (RB, the Radio Block) resource in the original PDSCH to transmit working frequency points, bandwidth and the mode of operation information of other frequency bands.For the resource of the dominant frequency band broadcast channel of distributing to expansion, system no longer distributes to other signals and uses.The dominant frequency band broadcast channel of expansion and the original dominant frequency band broadcast channel agreement relation that is assigned as on running time-frequency resource.For example, the subframe of original dominant frequency band broadcast channel is also launched the main channel broadcast channel of expansion simultaneously, and the main channel broadcast channel of emission expansion is to utilize and the original same subcarrier emission of dominant frequency band broadcast channel.
Simultaneously, for other frequency band broadcast channels, be divided into other frequency band broadcast channels (other frequency bands BCH of expansion) of other original frequency band broadcast channels (original other frequency bands BCH) and expansion.Running time-frequency resource by other original frequency band broadcast channels and other frequency band broadcast channels of distributing to expansion transmits the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band.Other frequency band broadcast channels and other original frequency band broadcast channels of expansion are predetermined relationship on time-frequency resource allocating.For example, the subframe of other original frequency band broadcast channels is also launched other frequency band broadcast channels of expansion simultaneously, and other frequency band broadcast channels of emission expansion are to utilize and the original same subcarrier emission of other frequency band broadcast channels.For other frequency band broadcast channels in the present embodiment, can offer the LTE system terminal and use, that is the application that the LTE system terminal can not add change wherein; Also can not offer the LTE system terminal and use, that is offer new system terminal use.
The 3rd embodiment of expansion broadcast channel
Fig. 4 shows the 3rd embodiment of the expansion broadcast channel of communication system of the present invention.See also Fig. 4, the expansion broadcast channel of communication system of the present invention is divided into dominant frequency band broadcast channel and other frequency band broadcast channels of system, and wherein dominant frequency band broadcast channel comprises the dominant frequency band broadcast channel (the dominant frequency band BCH of expansion) of original dominant frequency band broadcast channel (original dominant frequency band BCH) and expansion.Original dominant frequency band broadcast channel is used to transmit former LTE system information.The dominant frequency band broadcast channel of expansion is to use part radio block (RB, the Radio Block) resource in the original PDSCH to transmit working frequency points, bandwidth and the mode of operation information of other frequency bands.For the resource of the dominant frequency band broadcast channel of distributing to expansion, system no longer distributes to other signals and uses.The dominant frequency band broadcast channel of expansion and the original dominant frequency band broadcast channel agreement relation that is assigned as on running time-frequency resource.For example, the subframe of original dominant frequency band broadcast channel is also launched the main channel broadcast channel of expansion simultaneously, and the main channel broadcast channel of emission expansion is to utilize and the original same subcarrier emission of dominant frequency band broadcast channel.
Simultaneously, for other frequency band broadcast channels, transmit the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band by new running time-frequency resource.For example, than the more OFDM symbol of original BCH resource or more take number of sub carrier wave.For other frequency band broadcast channels in the present embodiment, can not offer the LTE system terminal and use, that is the LTE system terminal can't use wherein, only offer new system terminal and use.
The embodiment of the network equipment of expansion
At the broadcast channel of above-mentioned expansion, Fig. 5 shows the embodiment of the network equipment of the expansion that is applicable to these broadcast channels.See also Fig. 5, the network equipment of expansion comprises broadcast channel information mapping block (the BCH information mapping module that also is called the LTE system) 10, expansion broadcast channel information mapping block (also being called expansion BCH information mapping module) 11, OFDM modulation module 12, radio frequency sending set 13 and the antenna 14 of LTE system.
The broadcast channel information mapping block 10 of LTE system finish the LTE system broadcast channel Radio Resource mapping and export OFDM modulation module 12 to.Expansion broadcast channel information mapping block 11 is finished the Radio Resource mapping of expansion broadcast channel and is exported OFDM modulation module 12 to.OFDM modulation module 12 is finished the OFDM modulation function of all downstream signals and is exported radio frequency sending set 13 to.Radio frequency sending set 13 is finished baseband signal is converted into the function of radiofrequency signal and exports antenna 14 to.Antenna 14 is finished radiofrequency signal at last and is outwards launched.
The embodiment of the terminal equipment of expansion
The network equipment of corresponding above-mentioned expansion, Fig. 6 show the structure of embodiment of the terminal equipment of expansion.See also Fig. 6, the terminal equipment of expansion comprises that the broadcast channel information of antenna 20, OFDM demodulation module 22, LTE system is separated mapping block (the BCH information that also is called the LTE system is separated mapping block) 23 and expansion broadcast message channel is separated mapping block (also be called expansion BCH information and separate mapping block) 24.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (13)
1, a kind of expansion broadcast channel of communication system, comprise dominant frequency band broadcast channel and other frequency band broadcast channels, wherein this dominant frequency band broadcast channel comprises working frequency points, bandwidth and the mode of operation information of original LTE system information and other frequency bands, and these other frequency band broadcast channels comprise the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band.
2, the expansion broadcast channel of communication system according to claim 1, it is characterized in that, this dominant frequency band broadcast channel comprises the dominant frequency band broadcast channel of original dominant frequency band broadcast channel and expansion, wherein this original dominant frequency band broadcast channel is used to transmit original LTE system information, and the dominant frequency band broadcast channel of this expansion is used to transmit working frequency points, bandwidth and the mode of operation information of other frequency bands.
3, the expansion broadcast channel of communication system according to claim 2 is characterized in that, the dominant frequency band broadcast channel of this original dominant frequency band broadcast channel and this expansion is the agreement relation on time-frequency resource allocating.
4, the expansion broadcast channel of communication system according to claim 1, it is characterized in that these other frequency band broadcast channels transmit the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band by the running time-frequency resource of other original frequency band broadcast channels.
5, the expansion broadcast channel of communication system according to claim 4 is characterized in that, these other frequency band broadcast channels offer the LTE system terminal and use.
6, the expansion broadcast channel of communication system according to claim 4 is characterized in that, these other frequency band broadcast channels do not offer the LTE system terminal and use.
7, the expansion broadcast channel of communication system according to claim 1, it is characterized in that, these other frequency band broadcast channels are divided into other original frequency band broadcast channels and other frequency band broadcast channels of expansion, by the running time-frequency resource transmission dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band of the running time-frequency resource of other original frequency band broadcast channels and other frequency band broadcast channels of distributing to expansion.
8, the expansion broadcast channel of communication system according to claim 7 is characterized in that, these other frequency band broadcast channels offer the LTE system terminal and use.
9, the expansion broadcast channel of communication system according to claim 7 is characterized in that, these other frequency band broadcast channels do not offer the LTE system terminal and use.
10, the expansion broadcast channel of communication system according to claim 1 is characterized in that, these other frequency band broadcast channels transmit the dominant frequency band working frequency points system information relevant with bandwidth information and this frequency band by new running time-frequency resource.
11, the expansion broadcast channel of communication system according to claim 10 is characterized in that, these other frequency band broadcast channels do not offer the LTE system terminal and use.
12, a kind of network equipment of expansion comprises:
The broadcast channel information mapping block of LTE system is finished the Radio Resource mapping and the output of the broadcast channel of LTE system;
Expansion broadcast channel information mapping block is finished the Radio Resource mapping and the output of expansion broadcast channel;
The OFDM modulation module receives the output of broadcast channel information mapping block of this LTE system and the output of this expansion broadcast channel information mapping block, finishes the OFDM modulation function and the output of all downstream signals;
Radio frequency sending set receives the output of this OFDM modulation module, and baseband signal is converted into radiofrequency signal and output;
Antenna receives the output of this radio frequency sending set, finishes radiofrequency signal and outwards launches.
13, a kind of terminal equipment of expansion comprises:
Antenna is finished the reception and the output of radiofrequency signal aerial signal;
The OFDM demodulation module receives the output of this antenna, finishes and exports after radiofrequency signal is converted into baseband signal;
The broadcast channel information of LTE system is separated mapping block, receives the output of this OFDM demodulation module, finishes the Radio Resource of the broadcast channel of LTE system and separates the output of mapping back;
The expansion broadcast channel information is separated mapping block, receives the output of this OFDM demodulation module, finishes the Radio Resource of expansion and separates the output of mapping back.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640890B (en) * | 2008-08-01 | 2012-04-04 | 中兴通讯股份有限公司 | Broadcast channel allocation method and information reading method for wide bandwidth system |
| CN102761839A (en) * | 2011-04-29 | 2012-10-31 | 中兴通讯股份有限公司 | Missed call prompting device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640890B (en) * | 2008-08-01 | 2012-04-04 | 中兴通讯股份有限公司 | Broadcast channel allocation method and information reading method for wide bandwidth system |
| CN102761839A (en) * | 2011-04-29 | 2012-10-31 | 中兴通讯股份有限公司 | Missed call prompting device and method |
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Application publication date: 20100113 Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Assignor: Xinji Lease (Tianjin) Co.,Ltd. Contract record no.: 2018990000196 Denomination of invention: Extended broadcast channel of communication system, extended network equipment and extended terminal equipment Granted publication date: 20111116 License type: Exclusive License Record date: 20180801 |
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Effective date of registration: 20221025 Address after: 201203 Shanghai city Zuchongzhi road Pudong New Area Zhangjiang hi tech park, Spreadtrum Center Building 1, Lane 2288 Patentee after: SPREADTRUM COMMUNICATIONS (SHANGHAI) Co.,Ltd. Address before: 300456 1-1-1802-7, north area of financial and Trade Center, No. 6865, Asia Road, Tianjin pilot free trade zone (Dongjiang Bonded Port Area) Patentee before: Xinji Lease (Tianjin) Co.,Ltd. |
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