CN102404797B - The transmission of CFI information and acquisition methods and sending and receiving device in LTE system - Google Patents
The transmission of CFI information and acquisition methods and sending and receiving device in LTE system Download PDFInfo
- Publication number
- CN102404797B CN102404797B CN201010274393.7A CN201010274393A CN102404797B CN 102404797 B CN102404797 B CN 102404797B CN 201010274393 A CN201010274393 A CN 201010274393A CN 102404797 B CN102404797 B CN 102404797B
- Authority
- CN
- China
- Prior art keywords
- information
- mib
- subframe
- cfi
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
This application provides transmission and the acquisition methods of CFI information in a kind of LTE system, and the sending and receiving device in LTE system.The transmission method of CFI information comprises: be the subframe setting CFI information in the MIB cycle; Described CFI information is carried in the mib information corresponding with the described MIB cycle; And by mib information described in PBCH.Like this, can CFI information be carried in mib information, pass through PBCH.
Description
Technical field
The application relates to wireless communication technology field, particularly relates to Long Term Evolution LTE system.
Background technology
Long Term Evolution (LTE, Long Term Evolution) define four kinds of downlink physical control channels in system: Physical Broadcast Channel (PBCH, Physical Broadcast Channel), Physical Control Format Indicator Channel (PCFICH, Physical Control Format IndicatorChannel), Physical Downlink Control Channel (PDCCH, Physical Downlink ControlChannel) and Physical HARQ Indicator Channel (PHICH, Physical HARQ IndicatorChannel).
PBCH channel be used for transmit Master Information Block (MIB) Physical Broadcast Channel.The mib information transmitted in PBCH channel comprises: downlink bandwidth, PHICH configuration, System Frame Number (SFN), reserved place etc.
PCFICH channel is used for Bearer Control channel format instruction (CFI, Control FormatIndicator).CFI information is used to indicate the OFDM symbol number that the control domains such as Downlink Control Information (DCI) take.
PHICH channel is used for the ACK/NACK feedback information of uplink hybrid automatic repeat-request.
PDCCH channel is for carrying dispatching distribution and other control information, and namely PDCCH channel is the channel of bearing downlink control information DCI.
In the design of existing LTE system, as shown in Figure 1, the mib information transmitted in Physical Broadcast Channel PBCH uses a kind of scheduling that is fixing, that have the 40ms cycle, and within the 40ms time retransmission scheme.The MIB cycle of a 40ms comprises 4 10ms radio frames, and a radio frames comprises 10 subframes, that is, a MIB cycle can comprise 40 subframes.In LTE system, control domain (comprising PCFICH channel, PHICH channel and PDCCH channel) and the business domains (comprise physical down and share PDSCH channel) of a subframe adopt the mode of resource-sharing to be carried in this subframe, and every 1ms sends.Wherein, total OFDM (OFDM) symbolic number that control domain and business domains take in normal mode is 14.By the OFDM symbol number that the CFI information of PCFICH transmission instruction control domain takies, when control domain take resource less time, the resource distributing to business domains is just more, and vice versa.RB number is greater than to the system of 10, CFI value is 1/2/3, and the OFDM symbol number namely indicating control domain to take can be 1-3.RB number is less than to the system of 10, CFI value is 1/2/3/4, and the OFDM symbol number namely indicating control domain to take can be 1-4.That is, in prior art for each subframe all by PCFICH transmission CFI information so that between control domain and business domains dynamically Resources allocation.
But, because CFI informational needs transmits in the PCFICH channel of each subframe, therefore occupy the resource of control domain.Especially, the small data quantity M2M business carried for utilizing LTE system, such as ammeter data reports, because the terminal number running such business in system may be very many, thus need to take a large amount of control channel resources, be very easy to the situation producing PDCCH channel congestion.Therefore need to improve PDCCH channel capacity, the problem that the PDCCH channel capacity run into when alleviating LTE system support large user amount, small data quantity business is limited.
Summary of the invention
The object of the application is to provide transmission and the acquisition methods of CFI information in a kind of LTE system, avoids all transmitting CFI information in each subframe and the problem such as channel congestion caused.
According to an aspect of the application, provide the transmission method of CFI information in a kind of LTE system, comprising: be the subframe setting CFI information in the MIB cycle; Described CFI information is carried in the mib information corresponding with the described MIB cycle; And by mib information described in PBCH.Like this, CFI information can be carried in mib information and pass through PBCH.Set CFI information can indicate the OFDM symbol number shared by control domain of the subframe in the MIB cycle.
According to an execution mode, can delete in subframe for transmitting the PCFICH channel of described CFI information.Like this, avoid and all transmit CFI information and too much the taking subframe control domain resource of causing in each subframe.
According to an execution mode, the resource of the PCFICH channel deleted in described subframe can be used for the PDCCH channel of described subframe.Like this, effectively can promote the capacity of carrying PDCCH channel, the problem that the PDCCH channel capacity run into when alleviating LTE system support large user amount, small data quantity business is limited.
According to another execution mode, can be that the subframe in the MIB cycle sets identical CFI information.
According to another execution mode, described CFI information can be carried on the reserved place in described mib information.Alternatively, described CFI information is carried on the extension bits in described mib information.
According to another aspect of the application, provide the acquisition methods of CFI information in a kind of LTE system, comprising: received the mib information carrying CFI information by PBCH channel; Obtain the CFI information carried in described mib information; And by the OFDM symbol number shared by the control domain of described CFI Information application subframe within the MIB cycle that the described mib information of instruction is corresponding.
According to an execution mode, the step obtaining the CFI information carried in described mib information can comprise: resolve the reserved place in described mib information, obtains the CFI information carried in described mib information reserved place.
According to an execution mode, the step obtaining the CFI information carried in described mib information can comprise: resolve the extension bits in described mib information, obtains the CFI information carried in described mib information extension bits.
According to another aspect of the application, providing the dispensing device in a kind of LTE system, comprising: setting module, is the subframe setting CFI information in the MIB cycle; Processing module, is carried on described CFI information in the mib information corresponding with the described MIB cycle; And sending module, by mib information described in PBCH.
According to an execution mode, described processing module is deleted in described subframe for transmitting the PCFICH channel of described CFI information.
According to another execution mode, the resource of the PCFICH channel deleted in described subframe is used for the PDCCH channel of described subframe by described processing module.
According to another execution mode, described setting module is that the subframe in the MIB cycle sets identical CFI information.
According to another aspect of the application, provide the receiving system in a kind of LTE system, comprising: receiver module, received the mib information carrying CFI information by PBCH channel; And acquisition module, obtain the CFI information carried in described mib information.
According to an execution mode, receiving system comprises processing module further, the OFDM symbol number shared by control domain of the CFI Information application that described acquisition module obtains by described processing module subframe within the MIB cycle that the described mib information of instruction is corresponding.
Accompanying drawing explanation
Fig. 1 shows the MIB cycle in the down link of LTE system.
Fig. 2 shows the flow chart of the transmission method of CFI information in the LTE system according to the application.
Fig. 3 shows the flow chart of the acquisition methods of CFI information in the LTE system according to the application.
Fig. 4 shows the block diagram according to the dispensing device in the LTE system of the application.
Fig. 5 shows the block diagram according to the receiving system in the LTE system of the application.
Embodiment
With reference to the accompanying drawings the transmission of CFI information in LTE system disclosed in the present application and acquisition methods are described in detail.
Fig. 2 shows the transmission method of CFI information in the LTE system according to the application.
As shown in the figure, in step 210, be the subframe setting CFI information in the MIB cycle.As previously mentioned, a MIB cycle comprises multiple subframe.According to an execution mode of the application, can be the subframe setting CFI information in one or more MIB cycle.Set CFI information can indicate the OFDM symbol number shared by control domain of the subframe in one or more MIB cycle.
In a step 220, the CFI information of setting is carried in the mib information corresponding with this MIB cycle.
In step 230, described mib information is transmitted by Physical Broadcast Channel PBCH.
Like this, can be the subframe setting CFI information in the MIB cycle, and CFI information is carried in the mib information corresponding with the MIB cycle, pass through PBCH.
According to a kind of execution mode, can delete in subframe for transmitting the PCFICH channel of CFI information.Thus the control domain of each subframe only comprises PHICH channel and PDCCH channel in LTE system.Like this, too much the taking subframe control domain resource of all being caused by PCFICH transmission CFI information is in each subframe avoided.
In addition, during by LTE system support large user amount, small data quantity business, the PDCCH channel more resource being used for control domain is usually needed, with indicating user information.According to an execution mode of the application, the resource of the PCFICH channel deleted in subframe can be used for the PDCCH channel of described subframe.Like this, effectively can improve the resource shared by PDCCH channel, solve the problem that PDCCH is congested, the problem that the PDCCH channel capacity run into when especially solving large user's amount, small data quantity business under LTE system is limited.
According to an execution mode, be that the subframe in the MIB cycle sets identical CFI information.That is, for each subframe in same MIB cycle, the OFDM symbol number that its control domain takies is identical, and the CFI information carried in MIB is applicable to the whole subframes in this MIB cycle.Such as, a MIB periodic packets is as shown in Figure 1 containing 40 subframes.Can set a CFI information for 40 subframes in this MIB cycle, CFI value is 4, is 4 to indicate the OFDM symbol number shared by the control domain of in this MIB cycle 40 subframes.
As previously mentioned, mib information comprises: downlink bandwidth, PHICH configuration, System Frame Number (SFN), reserved place etc.According to an execution mode, the CFI information of setting can be carried on the reserved place in mib information.
According to another execution mode, the CFI information of setting can be carried on the extension bits in mib information.That is to say, expand existing mib information, outside existing mib information, increase CFI information.Mib information after expansion comprises: downlink bandwidth, number of transmission antennas, PHICH configuration, System Frame Number (SFN), CFI information, reserved place etc.
Below to support that the transmission method of LTE system to the application of 6RB (Resource Block) is specifically described.
Under the LTE system pattern of support 6RB, CFI maximum is 4, namely can have at most 4 OFDM symbol for Bearer Control domain information.According to LTE system resource settings principle, 4 OFDM symbol in the LTE system of 6 RB comprise at most 66 REG (ResourceElement Group).
In prior art, control domain comprises PCFICH channel, PHICH channel and PDCCH channel.Principle is mapped according to the physical channel in LTE system, PCFICH channel needs to take 4 REG, PHICH channel needs to take 3 REG (supposing that PHICH Group is configured to 1), and the RGE number that therefore PDCCH channel can be provided in this system to use is 59.According to PDCCH mapping ruler, carrying PDCCH resource unit is CCE, and each CCE is made up of 9 REG.So comprise in the LTE system of 6RB, comprise at most 6 CCE.And according to the carrying principle of PDCCH, public search space (Common search space) at least takies 4 CCE, the resource of the middle PDCCH in the specific mobile terminal to search space (UE specific search space) therefore for carrying PDSCH and PUSCH resource indication information is relatively limited, easily cause PDCCH congested, this problem can highlight more when system supports user number is more.
According to the application, in the LTE system comprising 6RB, delete the PCFICH channel in each subframe, and CFI information is carried in the mib information transmitted by Physical Broadcast Channel PBCH.The resource of PCFICH channel occupancy is used for PDCCH channel, thus the operable REG resource of PDCCH channel is promoted to 63 by 59, namely the operable CCE number of PDCCH is promoted to 7 by 6, and CCE resource improves about 16%.Therefore, this mode effectively can alleviate the limited problem of PDCCH resource.
In addition, because CFI information is carried in mib information, and the update cycle of mib information is 40ms, this just means that the OFDM symbol that PDCCH takies can upgrade with 40ms speed, therefore at least every 40ms just can adjust resource shared by PDSCH region, especially based in the network of small data quantity business, such renewal speed can meet actual needs.
Fig. 3 shows terminal equipment in the LTE system according to the application and obtains the method for CFI information.As shown in the figure, in step 301, the mib information carrying CFI information is received by Physical Broadcast Channel PBCH.In step 302, the CFI information carried in described mib information is obtained.In step 303, by the subframe of CFI Information application in MIB cycle corresponding to mib information, that is, by described CFI Information application in the subframe in MIB cycle corresponding to the described mib information of instruction control domain shared by OFDM symbol number.
Like this, CFI information can be obtained by receiving mib information, and by the whole subframes of CFI Information application in this MIB cycle, avoiding terminal equipment all needs when receiving each subframe to resolve to obtain CFI information, reduces the amount of calculation of terminal equipment, saves system resource.
According to an embodiment, step 320 comprises further: resolve the reserved place in described mib information, obtains the CFI information carried in described mib information reserved place.
According to another embodiment, step 320 comprises further: resolve the extension bits in described mib information, obtains the CFI information carried in described mib information extension bits.
Fig. 4 shows the block diagram according to the dispensing device in the LTE system of the application.As shown in the figure, the dispensing device in LTE system comprises setting module 410, processing module 420 and sending module 430.Setting module 410 is the subframe setting CFI information in the MIB cycle.CFI information is carried in the mib information corresponding with the MIB cycle by processing module 420.Sending module 430, by PBCH mib information.
According to an embodiment, processing module 420 can be deleted in subframe for transmitting the PCFICH channel of CFI information.Alternatively, the resource of the PCFICH channel deleted in subframe can be used for the PDCCH channel of subframe by processing module 420.
According to an embodiment, setting module 410 can be that the subframe in the MIB cycle sets identical CFI information.
Fig. 5 shows the block diagram according to the receiving system in the LTE system of the application.As shown in the figure, the receiving system in LTE system comprises receiver module 510 and acquisition module 520.Receiver module 510 receives the mib information carrying CFI information by PBCH channel.Acquisition module 520 obtains the CFI information carried in mib information.
According to an embodiment, receiving system 500 may further include processing module 530.The CFI Information application that acquisition module obtains by processing module 530 in the subframe in instruction MIB cycle corresponding to mib information control domain shared by OFDM symbol number.
Be described with reference to the exemplary embodiment of accompanying drawing to the application above.Those skilled in the art should understand that; above-mentioned embodiment is only used to the object that illustrates and the example of lifting; instead of be used for limiting; the any amendment done under all instructions in the application and claims, equivalently to replace, all should be included in and this application claims in the scope of protection.
Claims (4)
1. the transmission method of CFI information in LTE system, comprising:
Be that subframe in the MIB cycle sets identical CFI information, the OFDM symbol number shared by control domain of subframe in the MIB cycle that described CFI information indicates described mib information corresponding;
Described CFI information is carried on the reserved place in the mib information corresponding with the described MIB cycle or extension bits;
By mib information described in PBCH;
Delete in described subframe for transmitting the PCFICH channel of described CFI information; And
The resource of the PCFICH channel deleted in described subframe is used for the PDCCH channel of described subframe.
2. the acquisition methods of CFI information in LTE system, comprising:
The mib information carrying CFI information is received, the OFDM symbol number shared by control domain of subframe in the MIB cycle that described CFI information indicates described mib information corresponding by PBCH channel; And
Resolve the reserved place in described mib information or extension bits, obtain the CFI information carried in described mib information reserved place or extension bits;
Delete for transmitting the PCFICH channel of described CFI information in described subframe, and the resource of the PCFICH channel deleted in described subframe is used for the PDCCH channel of described subframe.
3. the dispensing device in LTE system, comprising:
Setting module is that the subframe in the MIB cycle sets identical CFI information, the OFDM symbol number shared by control domain of subframe in the MIB cycle that described CFI information indicates described mib information corresponding;
Processing module, is carried on the reserved place in the mib information corresponding with the described MIB cycle or extension bits by described CFI information; And
Sending module, by mib information described in PBCH;
Wherein, described processing module is deleted for transmitting the PCFICH channel of described CFI information in described subframe, and the resource of the PCFICH channel deleted in described subframe is used for the PDCCH channel of described subframe.
4. the receiving system in LTE system, comprising:
Receiver module, receives the mib information carrying CFI information by PBCH channel;
Acquisition module, obtains the CFI information carried in described mib information; And
Processing module, the OFDM symbol number shared by control domain of the CFI Information application that described acquisition module obtains by described processing module subframe within the MIB cycle that the described mib information of instruction is corresponding, delete for transmitting the PCFICH channel of described CFI information in described subframe, and the resource of the PCFICH channel deleted in described subframe is used for the PDCCH channel of described subframe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010274393.7A CN102404797B (en) | 2010-09-07 | 2010-09-07 | The transmission of CFI information and acquisition methods and sending and receiving device in LTE system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010274393.7A CN102404797B (en) | 2010-09-07 | 2010-09-07 | The transmission of CFI information and acquisition methods and sending and receiving device in LTE system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102404797A CN102404797A (en) | 2012-04-04 |
| CN102404797B true CN102404797B (en) | 2015-08-19 |
Family
ID=45886470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010274393.7A Expired - Fee Related CN102404797B (en) | 2010-09-07 | 2010-09-07 | The transmission of CFI information and acquisition methods and sending and receiving device in LTE system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102404797B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684675B (en) * | 2012-09-24 | 2018-10-02 | 夏普株式会社 | For down link control information transmission/method of reseptance of narrow-band user equipment |
| CN107040352A (en) * | 2016-02-03 | 2017-08-11 | 中兴通讯股份有限公司 | Parameter indicating means, base station and terminal based on MIB |
| AU2019272247B2 (en) * | 2018-05-22 | 2021-08-05 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control format indicator patterns for control information transmission |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008004681A1 (en) * | 2006-07-03 | 2008-01-10 | Nec Corporation | Broadcast channel transmission method and apparatus |
| CN101296028A (en) * | 2007-04-25 | 2008-10-29 | 大唐移动通信设备有限公司 | Method and device for special carrier transmitting multimedia broadcast multicast service, and transmission system |
| CN101686534A (en) * | 2008-09-23 | 2010-03-31 | 华为技术有限公司 | Method, terminal and system for selecting downlink main carrier to carry out data transmission |
| CN101789823A (en) * | 2010-02-11 | 2010-07-28 | 中兴通讯股份有限公司 | Method and system for transmitting control format indicating value |
| CN101822014A (en) * | 2007-08-15 | 2010-09-01 | 高通股份有限公司 | Rate matching of messages containing system parameters |
-
2010
- 2010-09-07 CN CN201010274393.7A patent/CN102404797B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008004681A1 (en) * | 2006-07-03 | 2008-01-10 | Nec Corporation | Broadcast channel transmission method and apparatus |
| CN101296028A (en) * | 2007-04-25 | 2008-10-29 | 大唐移动通信设备有限公司 | Method and device for special carrier transmitting multimedia broadcast multicast service, and transmission system |
| CN101822014A (en) * | 2007-08-15 | 2010-09-01 | 高通股份有限公司 | Rate matching of messages containing system parameters |
| CN101686534A (en) * | 2008-09-23 | 2010-03-31 | 华为技术有限公司 | Method, terminal and system for selecting downlink main carrier to carry out data transmission |
| CN101789823A (en) * | 2010-02-11 | 2010-07-28 | 中兴通讯股份有限公司 | Method and system for transmitting control format indicating value |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102404797A (en) | 2012-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6956065B2 (en) | Uplink control information transmission / reception in wireless network | |
| CN102256358B (en) | Method, device and system for transmitting and receiving data | |
| EP3342207B1 (en) | Sub-frame configuration in cellular system | |
| JP6217745B2 (en) | Wireless communication system, wireless communication method, receiving apparatus, and transmitting apparatus | |
| CN107211412B (en) | Terminal, base station, and wireless communication method | |
| RU2582072C2 (en) | Method and device for determining/providing for evaluation of pucch resource | |
| CN106162656B (en) | Method, base station, terminal and the communication system of data transmission | |
| EP2804433B1 (en) | Downlink control information transmission method and device | |
| WO2020196849A1 (en) | Resource management for wireless backhaul networks | |
| US10863449B2 (en) | Uplink channel sending method and apparatus | |
| US10433322B2 (en) | Base station and wireless device used in wireless communication system | |
| CN102244563B (en) | Method, device and system for transmitting and receiving data | |
| JP5252881B2 (en) | Base station and method used in mobile communication system | |
| EP3410804B1 (en) | User terminal, wireless base station, and wireless communication method | |
| EP3059876A1 (en) | Downlink resource indication method, apparatus and system for multiple-point-coordination network in lte system | |
| US20180041314A1 (en) | Data transmission method, feedback information transmission method, and related device | |
| CN102413505A (en) | Downlink ACK (acknowledgement)/NACK (negative acknowledgement) feedback resource allocation method and corresponding base station and user equipment | |
| JP2016531509A (en) | Information transmission method, information determination method, apparatus, and system in TDD system | |
| CN102404797B (en) | The transmission of CFI information and acquisition methods and sending and receiving device in LTE system | |
| CN102904853A (en) | Method and system for sending physical hybrid-ARQ indicator channel (PHICH) | |
| US20120093107A1 (en) | Apparatus and method for dynamically allocating resources in communication system | |
| CN110495119B (en) | Configuration method of downlink control channel, network equipment and terminal | |
| CN106788897B (en) | Management method and management device of downlink control information, base station and terminal | |
| CN106817767B (en) | Multi-subband downlink resource allocation method, system and base station of wireless communication system | |
| CN101801035A (en) | Method and device for transmitting downlink control signaling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |