CN105992260A - Downlink common channel transmitting, receiving method and device - Google Patents
Downlink common channel transmitting, receiving method and device Download PDFInfo
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- CN105992260A CN105992260A CN201510091545.2A CN201510091545A CN105992260A CN 105992260 A CN105992260 A CN 105992260A CN 201510091545 A CN201510091545 A CN 201510091545A CN 105992260 A CN105992260 A CN 105992260A
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Abstract
The invention discloses a downlink common channel transmitting method, a downlink common channel transmitting device, a downlink common channel receiving method and a downlink common channel receiving device, which are used for reducing interference on a downlink common channel with a frequency domain transmitting position fixed at a full-bandwidth fixed position. The downlink common channel transmitting method comprises the steps that: a network side aims at the downlink common channel with a resource mapping position at the full-bandwidth fixed position for mapping a plurality of candidate frequency domain transmitting positions; and the network side performs interference detection on each of the candidate frequency domain transmitting positions, and adopts a preset interference judging criterion to select the candidate frequency domain transmitting position with minimal interference for transmitting the downlink common channel transmitting method, or the network side transmits the downlink common channel at each candidate frequency domain transmitting position among the plurality of candidate frequency domain transmitting positions. Therefore, the interference problem of other communication systems on the same frequency band and the man-made malicious interference problem are solved, and the interference on the channel with a frequency domain resource mapping position fixed at the full-bandwidth fixed position is effectively reduced in a targeted manner.
Description
Technical field
The present invention relates to wireless communication technology field, particularly to transmission, the reception of a kind of common down channel
Method and apparatus.
Background technology
The modulation technique of Long Term Evolution (Time Division-Long Term Evolution, LTE) system is adopted
By OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology
Orthogonal frequency-time multiple access (OFDMA) technology is used with downlink multi-access technology.Common down channel includes
Master sync signal (Primary Synchronization Signal, PSS)/auxiliary synchronous signals (Secondary
Synchronization Signal, SSS)/Physical Broadcast Channel (Physical Broadcast Channel,
PBCH), wherein, PSS/SSS signal mainly complete the downgoing time that cell initial search and community select synchronize,
The functions such as downstream frequency synchronization and community ID detection.Cell initial search is search persistent district after UE start
And realize the basic process synchronized, it is UE access network.Provide the user the basis of miscellaneous service.PBCH
Channel bearing Master Information Block (Master Information Block, MIB), important including system bandwidth etc.
System information, be by follow-up data channel and normally receive the basis of process.Public peace at 700MHz
In full communication application, other sector application and the application of military communication field, typical conflicting mode is to make an uproar in broadband
Sound interference, part band noise jamming, single tone jamming and Multi-tone jamming, interference signal characteristic is shown in Fig. 1.
LTE system is wide-band mobile communication system, is currently more and more applied in the whole world.But
In the public safety communication application of such as 700MHz and other sector application (such as military communication field),
One significant drawback is to be easier to be disturbed and artificial malice by other communication system on same frequency band
Interference.According to the definition of LTE system, the common down channel such as PSS/SSS/PBCH is accessing terminal to network
And provide the user the basic function of miscellaneous service, PDSCH (Physical Downlink Shared
Channel, Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel, thing
Reason Uplink Shared Channel) carrying customer service.PDSCH and PUSCH can use up-downgoing flexibly to adjust
Degree technology hides interference effectively；The frequency domain resource mapping position of the common down channels such as PSS/SSS/PBCH
It is fixing, it is impossible to avoiding interference by the way of scheduling, once it is interfered, and will cause data channel
Cannot normally receive, it is impossible to normally work.
In sum, for common down channels such as PSS/SSS/PBCH, due to the resource mapped bits of frequency domain
Put the fixed position being fixed on full bandwidth, be generally fixed to 6 Physical Resource Block (Physical of center frequency point
Resource Block, PRB) on, the interference for other communication system of center frequency point is dry with artificial malice
Disturb, currently without effective solution.
Summary of the invention
The embodiment of the present invention provides sending, receiving method and the device of a kind of common down channel, in order to reduce
Common down channel is for the interference of other communication systems of center frequency point position and artificial malicious interference.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of sending method of common down channel, including:
Network side, for the resource mapping position common down channel in full bandwidth fixed position, maps multiple time
Transmission position, frequency-selecting territory, wherein, the plurality of candidate's frequency domain sends position and includes that described common down channel is write from memory
The frequency domain recognized sends position；
Described network side sends position for the plurality of candidate's frequency domain and all carries out Interference Detection, and uses default
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
It is transmitted, or, described network side each candidate's frequency in the plurality of candidate's frequency domain sends position
On transmission position, territory, described common down channel is transmitted.
So, by using multiple standby frequencies that common down channel is transmitted, same frequency band is solved
The interference problem of other communication system upper and artificial malicious interference problem, be effectively reduced the resource for frequency domain
Interference suffered by the channel of the fixed position that mapping position is fixed on full bandwidth.
It is preferred that network side for resource mapping position at the common down channel of full bandwidth fixed position, reflect
Penetrate multiple candidate's frequency domain and send position, specifically include:
Described network side is point on the basis of the acquiescence frequency domain transmission position of described common down channel, at full bandwidth
According to set frequency domain interval determine one by one candidate's frequency domain send position, wherein, described frequency domain interval comprises
The number of Physical Resource Block PRB is not less than the PRB number sent shared by described common down channel；Or
The PRB total number that comprised based on full bandwidth and sending shared by described common down channel
PRB number, calculates confirmable candidate's frequency domain and sends the maximum number of position, and according to institute in full bandwidth
Obtain maximum number determine multiple candidate's frequency domain send position, wherein, determined by multiple candidate's frequency domains send out
The frequency domain sending position to comprise described common down channel acquiescence sends position.
It is preferred that described network side with subscriber equipment formal communication before, for the plurality of candidate's frequency domain
Send position hold consultation and determine.
It is preferred that described network side sends position for the plurality of candidate's frequency domain all carries out Interference Detection, and
The interference judgment criterion preset is used to select candidate's frequency domain of institute's minimum interference to send position to described descending
Common signal channel is transmitted, and specifically includes:
Described network side sends position for each candidate's frequency domain and carries out the prison of one or more up channels
Survey, calculate corresponding interference according to monitoring result and judge parameter；
Parameter is judged, according to correspondence based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
It is transmitted.
It is preferred that judge parameter based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding,
Candidate's frequency domain of institute's minimum interference is selected to send position to described descending according to corresponding interference judgment criterion
Common signal channel is transmitted, and specifically includes:
If described interference judges that parameter is Signal to Interference plus Noise Ratio, the most described network side selects the candidate that Signal to Interference plus Noise Ratio is maximum
Frequency domain sends position and is transmitted described common down channel；Or,
If described interference judges that parameter is signal interference ratio, the most described network side selects candidate's frequency domain that signal interference ratio is maximum
Send position described common down channel is transmitted；Or,
If described interference judges that parameter is dry ratio of making an uproar, the most described network side selects dry making an uproar than minimum candidate's frequency domain
Send position described common down channel is transmitted；Or,
If described interference judges that parameter is jamming power, the most described network side selects the candidate that jamming power is minimum
Frequency domain sends position and is transmitted described common down channel.
A kind of method of reseptance of common down channel, including:
Subscriber equipment determines that multiple candidate's frequency domains that network side maps send position；
Described subscriber equipment sends position for the plurality of candidate's frequency domain and carries out described descending public letter respectively
The reception in road processes, and selects candidate's frequency domain of first decoding success common down channel to send position continuation
Carrying out the mutual of follow-up data, wherein, described common down channel is that described network side uses the interference preset
Judgment criterion selects candidate's frequency domain of institute's minimum interference to send what position was transmitted, or, described descending
Common signal channel is that described network side each candidate's frequency domain in the plurality of candidate's frequency domain sends position is sent out
Send and be transmitted on position.
So, for multiple standby frequencies, common down channel is received by using, solves identical
On frequency band, the interference problem of other communication system and artificial malicious interference problem, be effectively reduced for frequency domain
Resource mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
A kind of dispensing device of common down channel, including:
Resource mapping unit, for for the resource mapping position descending public letter in full bandwidth fixed position
Road, maps multiple candidate's frequency domain and sends position, and wherein, the plurality of candidate's frequency domain sends position and includes described
The frequency domain of common down channel acquiescence sends position；
Transmitting element, all carries out Interference Detection for sending position for the plurality of candidate's frequency domain, and uses
The interference judgment criterion preset selects candidate's frequency domain of institute's minimum interference to send position to described descending public
Channel is transmitted, or, each in the plurality of candidate's frequency domain sends position of described network side is waited
On transmission position, frequency-selecting territory, described common down channel is transmitted.
So, by using multiple standby frequencies that common down channel is transmitted, same frequency band is solved
The interference problem of other communication system upper and artificial malicious interference problem, be effectively reduced the resource for frequency domain
Mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
It is preferred that for the resource mapping position common down channel in full bandwidth fixed position, mapping is many
Individual candidate's frequency domain send position time, described resource mapping unit specifically for:
Point on the basis of position is sent, according to setting in full bandwidth by the acquiescence frequency domain of described common down channel
Frequency domain interval determines that candidate's frequency domain sends position, wherein, the Physical Resource Block that described frequency domain interval comprises one by one
The number of PRB is not less than the PRB number sent shared by described common down channel；Or
The PRB total number that comprised based on full bandwidth and sending shared by described common down channel
PRB number, calculates confirmable candidate's frequency domain and sends the maximum number of position, and according to institute in full bandwidth
Obtain maximum number determine multiple candidate's frequency domain send position, wherein, determined by multiple candidate's frequency domains send out
The frequency domain sending position to comprise described common down channel acquiescence sends position.
It is preferred that described device with subscriber equipment formal communication before, described resource mapping unit is for institute
State multiple candidate's frequency domain transmission position hold consultation and determine.
It is preferred that all carry out Interference Detection sending position for the plurality of candidate's frequency domain, and use default
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
When being transmitted, described transmitting element specifically for:
Send position for each candidate's frequency domain and carry out the monitoring of one or more up channels, according to monitoring
Result calculates corresponding interference and judges parameter；
Parameter is judged, according to correspondence based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
It is transmitted.
It is preferred that judging ginseng based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Number, selects candidate's frequency domain transmission position of institute's minimum interference under described according to corresponding interference judgment criterion
When row common signal channel is transmitted, described transmitting element specifically for:
If described interference judges that parameter is Signal to Interference plus Noise Ratio, the most described transmitting element selects the time that Signal to Interference plus Noise Ratio is maximum
Described common down channel is transmitted by transmission position, frequency-selecting territory；Or,
If described interference judges that parameter is signal interference ratio, the most described transmitting element selects candidate's frequency that signal interference ratio is maximum
Described common down channel is transmitted by transmission position, territory；Or,
If described interference judges that parameter is dry ratio of making an uproar, the most described transmitting element selects dry making an uproar than minimum candidate's frequency
Described common down channel is transmitted by transmission position, territory；Or,
If described interference judges that parameter is jamming power, the most described transmitting element selects the time that jamming power is minimum
Described common down channel is transmitted by transmission position, frequency-selecting territory.
A kind of reception device of common down channel, including:
Position determination unit, for determining that multiple candidate's frequency domains that network side maps send position；
Position selects unit, carries out described descending public affairs respectively for sending position for the plurality of candidate's frequency domain
The reception of channel processes altogether, and selects candidate's frequency domain of first decoding success common down channel to send position
Proceeding the mutual of follow-up data, wherein, described common down channel is that the employing of described network side is preset
Interference judgment criterion selects candidate's frequency domain of institute's minimum interference to send what position was transmitted, or, described
Common down channel is described network side each candidate's frequency in the plurality of candidate's frequency domain sends position
It is transmitted on transmission position, territory.
So, for multiple standby frequencies, common down channel is received by using, solves identical
On frequency band, the interference problem of other communication system and artificial malicious interference problem, be effectively reduced for frequency domain
Resource mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
Accompanying drawing explanation
Fig. 1 is interference signal characteristic schematic diagram in background technology；
Fig. 2 is embodiment of the present invention common down channel transmission flow figure；
Fig. 3 is that embodiment of the present invention common down channel receives flow chart；
Fig. 4 and Fig. 5 is that in the embodiment of the present invention, PSS/SSS/PBCH sends schematic diagram；
Fig. 6 and Fig. 8 is network equipment structural representation in the embodiment of the present invention；
Fig. 7 and Fig. 9 is user device architecture schematic diagram in the embodiment of the present invention.
Detailed description of the invention
In the embodiment of the present invention, consult multiple candidate's frequency domains by network side and subscriber equipment and send position, and
Utilizing the interference judgment criterion preset to send position at multiple candidate's frequency domains selects optimum frequency domain to send position
Carry out the transmission of common down channel, thus solve on same frequency band the interference problem of other communication system and
Artificial malicious interference problem, is effectively reduced the resource mapping position for frequency domain and is fixed on the fixing of full bandwidth
The experienced interference of the channel of position.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
In the embodiment of the present invention, as a example by PSS/SSS/PBCH common down channel, for the resource of frequency domain
Mapping position is fixed on the channel of the fixed position of full bandwidth and is described in detail to anti-disturbance method,
The resource mapping position of PSS/SSS/PBCH channel frequency is fixed on the fixed position of full bandwidth, the most fixing
On 6 PRB of center frequency point.
LTE system has system bandwidth in 6, and corresponding PRB number sees table 1.
Table 1 LTE system bandwidth and corresponding PRB number
For different system bandwidths, center frequency point is positioned at the center of working frequency range, and full bandwidth is further
Being divided into several PRB and subcarrier, these PRB and subcarrier are usually with 180KHz and 15Khz
Carrying out dividing for interval, 1 PRB comprises 12 subcarriers.
Refering to shown in Fig. 2, in the embodiment of the present invention, the method that common down channel sends specifically includes:
Step 200: network side for the resource mapping position common down channel in full bandwidth fixed position,
Mapping multiple candidate's frequency domain and send position, wherein, multiple candidate's frequency domains send position and include common down channel
The frequency domain of acquiescence sends position.
As a example by PSS/SSS/PBCH common down channel, as it has been described above, the resource of its channel frequency maps
Position is fixed on 6 PRB of center frequency point.
First, in whole system bandwidth, network side determines that candidate's frequency domain of N number of PSS/SSS/PBCH sends position
Put.Wherein, N is positive integer.
N number of candidate's frequency domain sends position and includes the transmission position that PSS/SSS/PBCH gives tacit consent to, i.e. one of them
Candidate's frequency domain sends position and keeps consistent with 36.211 agreements, at center frequency point.Further, by PSS/SSS
The frequency domain of signal and PBCH signal sends position and is arranged on identical position.
Other several candidate's frequency domains in addition to center frequency point send method for determining position two kinds.
The first is to carry out frequency translation based on center frequency point according to the step-length set, it is, with center
Point on the basis of frequency, takes multiple different frequency according to certain interval and sends position as candidate's frequency domain.
Wherein, owing to the transmission of PSS/SSS/PBCH common signal needs 6 PRB, therefore step is being set
Time long, it is desirable to each two candidate's frequency domain sends the interval between position more than 6 PRB.The choosing of concrete step-length
Select, can be according to high level notice or human configuration or need voluntarily to be set.
The second is, the total PRB number comprised according to system bandwidth, and sends common down channel
The PRB number needed, marks off whole system bandwidth multiple candidate's frequency domain to greatest extent and sends position,
Wherein, multiple candidate's frequency domains send the position that position comprises center frequency point.
For example, with reference to shown in table 1, in LTE system, 100 PRB that 20Mhz system bandwidth comprises,
By dividing to greatest extent, can mark off 16 candidate's frequency domains and send position, wherein, 16 candidate's frequency domains are sent out
Send the position comprising center frequency point in position.
Step 210: network side sends position for predetermined multiple candidate's frequency domains and utilizes the interference preset
Judge that parameter carries out Interference Detection, use interference to judge the interference judgment criterion that parameter is corresponding, select suffered dry
This common down channel is transmitted by the candidate's frequency domain transmission position disturbing minimum；Or, network side is in advance
The multiple candidate's frequency domains determined send position and are all transmitted this common down channel.
Specifically, network side, after performed resource mapping for PSS/SSS/PBCH signal, is
After PSS/SSS/PBCH channel determines that N number of candidate's frequency domain sends position, two kinds of methods can be taked to carry out
The transmission of PSS/SSS/PBCH signal, introduces both approaches in detail below.
First method: select candidate's frequency domain of institute's minimum interference to send position further.
Up channel/signal is detected by network side, up channel/signal may include that SRS, PUSCH,
PRACH, PUCCH or do not carry out the sub-frame of uplink of business transmission.
Interference judges that parameter includes but not limited to: Signal to Interference plus Noise Ratio (SINR), dry make an uproar than (IoT), signal interference ratio
(SIR) and jamming power (IP), corresponding interference judgment criterion includes but not limited to: Signal to Interference plus Noise Ratio is maximum
Change criterion, dry make an uproar than minimizing criterion, signal interference ratio maximizes criterion and jamming power and minimizes criterion.
If maximizing criterion it is to say, interference judgment criterion is Signal to Interference plus Noise Ratio, then interference judges that parameter is
Signal to Interference plus Noise Ratio；If interference judgment criterion is that dry ratio of making an uproar minimizes criterion, then interference judges that parameter is dry ratio of making an uproar；
If interference judgment criterion is signal interference ratio maximizes criterion, the most above-mentioned strong jamming judges that parameter is signal interference ratio；As
Judgment criterion disturbed by dried fruits is that jamming power minimizes criterion, then interference judges that parameter is jamming power.
Network side, by the detection to up channel, sends position calculation for each candidate's frequency domain a certain
The interference parameter set, and select institute's minimum interference according to the interference judgment criterion that this interference parameter is corresponding
Candidate's frequency domain send position, as optimal frequency domain send position.And only enter in this optimal frequency domain transmission position
The transmission of row PSS/SSS/PBCH signal, it is, other candidates in addition to optimal frequency domain sends position
Frequency domain sends position and does not carry out the transmission of PSS/SSS/PBCH signal.
Wherein, this optimal frequency domain sends position and is probably the position of center frequency point, it is also possible to be other candidate's frequency
Transmission position, territory, as such, it is possible to reduce the dry of other communication systems from center frequency point to a certain extent
Disturb or/and artificial malicious interference.
It should be noted that the network equipment of the embodiment of the present invention can be base station (such as macro base station, family
Base station, front yard etc.), it is also possible to it is RN (relaying) equipment, it is also possible to be other network equipment.
It is above the explanation that the sending method of the first common down channel is carried out, refering to shown in Fig. 3, below
Method of reseptance for common down channel corresponding to user equipment side is described in detail.
Step 300: subscriber equipment determines that multiple candidate's frequency domains that network side maps send position；
Step 310: subscriber equipment sends position for multiple candidate's frequency domains and carries out common down channel respectively
Reception processes, and selects candidate's frequency domain transmission position of first decoding success common down channel to proceed
Follow-up data mutual, wherein, common down channel is that network side uses the interference judgment criterion preset to select
Candidate's frequency domain of institute's minimum interference sends what position was transmitted, or, common down channel is network side
It is transmitted on each candidate's frequency domain transmission position in multiple candidate's frequency domains send position.
Specifically, for the sending method of the first common down channel, in the mistake receiving common down channel
Cheng Zhong, user equipment side specifically performs procedure below.
Multiple candidate's frequency domains that network side is mapped by subscriber equipment successively send position and carry out common down channel
Reception, and the described common down channel received is demodulated process；
Wherein, this subscriber equipment for this common down channel received successfully decoded time, select corresponding
Candidate's frequency domain send position carry out down control channel and downstream data channel reception process.
In above process, all do not search descending public if subscriber equipment sends position at all candidate's frequency domains
Channel, or when searching common down channel, success undecoded to this common down channel, then this use
Family equipment connection failure.
Still illustrating as a example by PSS/SSS/PBCH common down channel, subscriber equipment and network side exist
Consulting multiple candidate's frequency domain before formal communication and send the value of position, network is surveyed based on selected optimal frequency
After transmission position, territory carries out the transmission of PSS/SSS/PBCH common down channel, the user of access network sets
Each multiple candidate's frequency domain consulted in advance of standby traversal send position.Often select candidate's frequency domain to send
Position, subscriber equipment uses PSS/SSS signal to carry out cell searching, after searching PSS/SSS signal,
Carry out the demodulation process of PBCH signal again, if it is possible to for PBCH signal interpretation success, then user is eventually
End selects corresponding candidate's frequency domain to send position to proceed connecing of down control channel and downstream data channel
Receipts process.
Wherein, have sent sending out of PSS/SSS/PBCH signal owing to network side only sends position at optimal frequency domain
Sending, therefore, during signal search, user terminal sends position at this optimal frequency domain and realizes PBCH
Successfully decoded probability is maximum, in such manner, it is possible to ensure that user terminal sends position at optimal frequency domain and carries out data
Mutual, significantly reduce interference.
Even if if the PSS/SSS/PBCH signal that network side sends in optimal frequency domain transmission position, but the most also
Receive the biggest interference, then subscriber equipment is during selecting position, sends searching optimal frequency domain
During position, PBCH also can be occurred to decode unsuccessful situation, in this case, then subscriber equipment connects mistake
Lose.
So far, send position based on multiple candidate's frequency domains set in advance and select optimum frequency domain to send position,
Introduce complete with the method for reduction interference.
Second method is:
Network side sends position at predetermined multiple candidate's frequency domains all to carry out this common down channel sending out
Send.
Specifically, this programme is with the difference of above-mentioned first method, and above-mentioned first method is based on presetting
Interference judgment criterion have selected the minimum candidate's frequency domain of interference and send position and carry out sending out of common down channel
Send, and this method is to send position at each candidate's frequency domain all to carry out the transmission of common down channel.
So, in the case of center frequency point is interfered, sending position by other candidate's frequency domains can protect
Card is normally carried out the transmission of common down channel, such that it is able to reduce to a certain extent from center frequency point
The interference of other communication systems is or/and artificial malicious interference.
The explanation that the method being above sending the second PSS/SSS/PBCH is carried out, same refering to Fig. 3 institute
Show, corresponding with first method to the method for reseptance of PSS/SSS/PBCH to user equipment side for the method
The idiographic flow of method of reseptance of subscriber equipment identical.
Specifically, subscriber equipment performs procedure below.
Multiple candidate's frequency domains that network side is mapped by subscriber equipment successively send position and carry out common down channel
Reception, and the described common down channel received is demodulated process；
Wherein, this subscriber equipment for this common down channel received successfully decoded time, select corresponding
Candidate's frequency domain send position carry out down control channel and downstream data channel reception process.
In the operation of the subscriber equipment that second method is corresponding, subscriber equipment is carrying out different candidate's frequency domain transmission
The signal search of position, the process of signal processing, and how to select final frequency domain to send the mode of position
The operation of the subscriber equipment corresponding with first method is identical, does not repeats them here.
Except for the difference that, have sent PSS/SSS/PBCH signal owing to network side sends position at each frequency domain,
Therefore, during signal search, subscriber equipment can be tried in center frequency point and other positions
Enter, and, when center frequency point is by strong jamming, subscriber equipment can have a selection of other positions, so,
Just can support jamproof ability to a certain degree improve PSS/SSS/PBCH channel.
Wherein, it is successfully decoded that subscriber equipment is likely to realize PBCH in multiple candidate's frequency domains transmission position,
Therefore, subscriber equipment successively to multiple candidate's frequency domains send position carry out PSS/SSS signal search and
During the demodulation process of PBCH, need to pre-set a priority, carry out successively according to the order of priority
Search, this priority may be configured as, and center frequency point is limit priority, accesses according to this user terminal history
The experience of position arranges the priority of other positions, it is also possible to select additive method to be set priority.
So, this subscriber equipment is once successfully decoded for this common down channel received, then select phase
The candidate's frequency domain answered sends position and carries out the reception process of down control channel and downstream data channel.
Below with network equipment as eNB as a example by (evolution base station), to sending, PSS/SSS/PBCH is descending
Common signal channel illustrates.
Assuming that system bandwidth is 20MHz, the frequency domain for PSS/SSS/PBCH common down channel sends position
Putting selection number is 3, and e.g., respectively candidate 0, candidate 1 and candidate 2, wherein, candidate 0 and LTE36.211
It is consistent that agreement specifies, the position of centrally disposed frequency, and position based on candidate 0 carries out frequency domain and moves,
Ensureing that candidate 1 and the candidate 2 interval respectively and between candidate 0 are both greater than 6 PRB, such as, candidate 1
Frequency domain position be mapped in 300*15KHz=4.5MHz, and the frequency domain position of candidate 2 is mapped in
-300*15KHz=-4.5MHz.
After selected 3 candidate's frequency domains send position, two kinds of methods can be taked to perform
The transmission of PSS/SSS/PBCH.
First method is: base station sends position at 3 candidate's frequency domains and sends PSS/SSS/PBCH simultaneously.
PSS/SSS/PBCH corresponding to first method sends schematic diagram as shown in Figure 4.
So, the interference of other communication systems is received or/and artificial malice is dry as candidate 0 (i.e. center frequency point)
When disturbing, position can be sent by other candidate's frequency domains and reduce interference to a certain extent.
Second method is: base station selects optimum candidate's frequency domain to send based on certain interference judgment criterion
Position sends PSS/SSS/PBCH.
PSS/SSS/PBCH corresponding to first method sends schematic diagram as shown in Figure 5.
Specifically comprise the following steps that
Step1: base station sends on position at each candidate's frequency domain, uses SRS signal or is not adjusted
The upgoing O FDM symbol of degree carries out the calculating of Signal to Interference plus Noise Ratio (SINR), and right in setting cycle T
The numerical value calculating the Signal to Interference plus Noise Ratio obtained does linear smoothing process.
Wherein, owing to PBCH itself has a update cycle T1 (such as 40ms), therefore, this can be by week
The value of phase T is set as the integral multiple of 40ms.
Step2: be analyzed the result of cycle T internal linear smoothing processing, maximizes according to Signal to Interference plus Noise Ratio
Criterion, candidate's frequency domain transmission position that the Signal to Interference plus Noise Ratio value of selection Signal to Interference plus Noise Ratio maximum is corresponding (is assumed to be candidate
2) position is sent as optimal frequency domain.
The most so select, be because Signal to Interference plus Noise Ratio maximum and show to send suffered by position at corresponding frequency domain
Interference minimum, is therefore that optimal frequency domain sends position.
Step3: base station sends at selected optimal frequency domain and sends PSS/SSS/PCBH on position.
For user terminal (i.e. UE) side, no matter it is PSS/SSS/PCBH with which kind of method is entered by base station
Row sends, and is carried out following operation:
Step1:UE receives corresponding to the data of 10ms in 20M bandwidth, time domain on frequency domain；
Each candidate's frequency domain of Step2:UE order traversal sends position.
Step3: judge whether traversal terminates, if so, performs Step6, otherwise, selected current candidate's frequency
Behind transmission position, territory, perform Step4.
Step4:UE sends on position at selected current candidate frequency domain, carries out first with PSS/SSS signal
Cell searching, the reception carrying out PBCH according to the community ID searched processes, and whether judges PBCH
Successfully decoded, the most then perform Step5, otherwise, perform Step3.
Step5:UE sends on position at selected current candidate frequency domain, proceed down control channel and
The reception of downstream data channel processes.
Step6:UE connection failure.
Based on above-described embodiment, refering to shown in Fig. 6, in the embodiment of the present invention, have also been devised a kind of descending public affairs
The dispensing device of channel altogether, including: resource mapping unit 60 and transmitting element 61.Wherein:
Resource mapping unit 60, for for the resource mapping position descending public letter in full bandwidth fixed position
Road, maps multiple candidate's frequency domain and sends position, and wherein, multiple candidate's frequency domains send position and include descending public
The frequency domain of channel acquiescence sends position；
Transmitting element 61, all carries out Interference Detection for sending position for multiple candidate's frequency domains, and uses pre-
If interference judgment criterion select candidate's frequency domain of institute minimum interference to send position common down channel is entered
Row sends, or, network side each candidate's frequency domain in multiple candidate's frequency domains send position sends position
On, common down channel is transmitted.
So, by using multiple standby frequencies that common down channel is transmitted, same frequency band is solved
The interference problem of other communication system upper and artificial malicious interference problem, be effectively reduced the resource for frequency domain
Mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
It is preferred that for the resource mapping position common down channel in full bandwidth fixed position, mapping is many
Individual candidate's frequency domain send position time, resource mapping unit 60 specifically for:
Point on the basis of position is sent, according to setting frequency domain in full bandwidth by the acquiescence frequency domain of common down channel
Interval determines that candidate's frequency domain sends position, wherein, the Physical Resource Block PRB's that frequency domain interval comprises one by one
Number is not less than the PRB number sent shared by common down channel；Or
The PRB total number comprised based on full bandwidth and transmission PRB number shared by common down channel
Mesh, calculates confirmable candidate's frequency domain and sends the maximum number of position, and according to being obtained in full bandwidth
Maximum number determine multiple candidate's frequency domain send position, wherein, determined by multiple candidate's frequency domains send position
The frequency domain comprising common down channel acquiescence sends position.
It is preferred that device with subscriber equipment formal communication before, resource mapping unit 60 is for multiple times
Hold consultation and determine in transmission position, frequency-selecting territory.
It is preferred that all carry out Interference Detection sending position for multiple candidate's frequency domains, and use that presets to do
Disturbing judgment criterion selects candidate's frequency domain transmission position of institute's minimum interference to be transmitted common down channel
Time, transmitting element 61 specifically for:
Send position for each candidate's frequency domain and carry out the monitoring of one or more up channels, according to monitoring
Result calculates corresponding interference and judges parameter；
Parameter is judged, according to correspondence based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position common down channel is carried out
Send.
It is preferred that judging ginseng based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Number, selects candidate's frequency domain of institute's minimum interference to send position to descending public affairs according to corresponding interference judgment criterion
When altogether channel is transmitted, transmitting element 61 specifically for:
If interference judges that parameter is Signal to Interference plus Noise Ratio, then transmitting element 61 selects candidate's frequency that Signal to Interference plus Noise Ratio is maximum
Common down channel is transmitted by transmission position, territory；Or,
If interference judges that parameter is signal interference ratio, then candidate's frequency domain that transmitting element 61 selects signal interference ratio maximum is sent out
Send position that common down channel is transmitted；Or,
If interference judges that parameter is dry ratio of making an uproar, then candidate's frequency domain that transmitting element 61 selects signal interference ratio minimum is sent out
Send position that common down channel is transmitted；Or,
If interference judges that parameter is jamming power, then transmitting element 61 selects candidate's frequency that jamming power is minimum
Common down channel is transmitted by transmission position, territory.
Based on above-described embodiment, refering to shown in Fig. 7, in the embodiment of the present invention, have also been devised a kind of descending public affairs
The reception device of channel altogether, including: position determination unit 70 and position select unit 71.Wherein:
Position determination unit 70, for determining that multiple candidate's frequency domains that network side maps send position；
Position selects unit 71, carries out described descending respectively for sending position for the plurality of candidate's frequency domain
The reception of common signal channel processes, and selects candidate's frequency domain of first decoding success common down channel to send position
Putting and proceed the mutual of follow-up data, wherein, described common down channel is that the employing of described network side is preset
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send what position was transmitted, or, institute
Stating common down channel is described network side each candidate in the plurality of candidate's frequency domain sends position
It is transmitted on frequency domain transmission position.
So, for multiple standby frequencies, common down channel is received by using, solves identical
On frequency band, the interference problem of other communication system and artificial malicious interference problem, be effectively reduced for frequency domain
Resource mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
Based on above-described embodiment, refering to shown in Fig. 8, in the embodiment of the present invention, network equipment includes:
Processor 800, for reading the program in memorizer 820, performs following process:
For the resource mapping position common down channel in full bandwidth fixed position, map multiple candidate's frequency domain
Sending position, wherein, multiple candidate's frequency domains send the frequency domain transmission position that position includes that common down channel is given tacit consent to
Put；And, send position for multiple candidate's frequency domains and all carry out Interference Detection, and use the interference preset to sentence
Disconnected criterion selects candidate's frequency domain of institute's minimum interference to send position by transceiver 810 to common down channel
It is transmitted, or, network side each candidate's frequency domain in multiple candidate's frequency domains send position sends position
Put, by transceiver 810, common down channel is transmitted.
Transceiver 810, for receiving and sending data under the control of processor 800.
So, by using multiple standby frequencies that common down channel is transmitted, same frequency band is solved
The interference problem of other communication system upper and artificial malicious interference problem, be effectively reduced the resource for frequency domain
Mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
It is preferred that for the resource mapping position common down channel in full bandwidth fixed position, mapping is many
Individual candidate's frequency domain send position time, processor 800 specifically for:
Point on the basis of position is sent, according to setting frequency domain in full bandwidth by the acquiescence frequency domain of common down channel
Interval determines that candidate's frequency domain sends position, wherein, the Physical Resource Block PRB's that frequency domain interval comprises one by one
Number is not less than the PRB number sent shared by common down channel；Or
The PRB total number comprised based on full bandwidth and transmission PRB number shared by common down channel
Mesh, calculates confirmable candidate's frequency domain and sends the maximum number of position, and according to being obtained in full bandwidth
Maximum number determine multiple candidate's frequency domain send position, wherein, determined by multiple candidate's frequency domains send position
The frequency domain comprising common down channel acquiescence sends position.
It is preferred that device with subscriber equipment formal communication before, processor 800 is for multiple candidate's frequency domains
Send position hold consultation and determine.
It is preferred that all carry out Interference Detection sending position for multiple candidate's frequency domains, and use that presets to do
Disturbing judgment criterion selects candidate's frequency domain transmission position of institute's minimum interference to be transmitted common down channel
Time, processor 800 specifically for:
Send position for each candidate's frequency domain and carry out the monitoring of one or more up channels, according to monitoring
Result calculates corresponding interference and judges parameter；
Parameter is judged, according to correspondence based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position common down channel is carried out
Send.
It is preferred that judging ginseng based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Number, selects candidate's frequency domain of institute's minimum interference to send position to descending public affairs according to corresponding interference judgment criterion
When altogether channel is transmitted, processor 800 specifically for:
If interference judges that parameter is Signal to Interference plus Noise Ratio, then processor 800 selects candidate's frequency domain that Signal to Interference plus Noise Ratio is maximum
Send position by transceiver 810, common down channel to be transmitted；Or,
If interference judges that parameter is signal interference ratio, then candidate's frequency domain that processor 800 selects signal interference ratio maximum sends
Common down channel is transmitted by position by transceiver 810；Or,
If interference judges that parameter is dry ratio of making an uproar, then candidate's frequency domain that processor 800 selects signal interference ratio minimum sends
Common down channel is transmitted by position by transceiver 810；Or,
If interference judges that parameter is jamming power, then processor 800 selects candidate's frequency domain that jamming power is minimum
Send position by transceiver 810, common down channel to be transmitted.
Wherein, in fig. 8, bus architecture can include bus and the bridge of any number of interconnection, specifically by
The various electrical chains of the memorizer that one or more processors of processor 800 representative and memorizer 820 represent
It is connected together.Bus architecture can also be by such as ancillary equipment, manostat and management circuit or the like
Other electrical chains various are connected together, and these are all to it is known in the art, therefore, the most no longer enter it
Row further describes.EBI provides interface.Transceiver 810 can be multiple element, i.e. includes sending
Machine and transceiver, it is provided that for the unit communicated with other devices various over a transmission medium.Processor 800
Being responsible for bus architecture and common process, memorizer 820 can store processor 800 and perform operation
Time the data that used.
Based on above-described embodiment, refering to shown in Fig. 9, in the embodiment of the present invention, subscriber equipment includes:
Processor 900, for reading the program in memorizer 920, performs following process:
Determine that multiple candidate's frequency domains that network side maps send position, send position for multiple candidate's frequency domains and divide
The reception not carrying out common down channel processes, and selects the candidate of first decoding success common down channel
Frequency domain sends position and proceeds the mutual of follow-up data, and wherein, common down channel is that network side uses in advance
If interference judgment criterion select candidate's frequency domain of institute minimum interference to send what position was transmitted, or,
Common down channel is that network side each candidate's frequency domain in multiple candidate's frequency domains send position sends position
Put and be transmitted.
So, for multiple standby frequencies, common down channel is received by using, solves identical
On frequency band, the interference problem of other communication system and artificial malicious interference problem, be effectively reduced for frequency domain
Resource mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
Transceiver 910, for receiving and sending data under the control of processor 900.
Wherein, in fig .9, bus architecture can include bus and the bridge of any number of interconnection, specifically by
The various electrical chains of the memorizer that one or more processors of processor 900 representative and memorizer 920 represent
It is connected together.Bus architecture can also be by such as ancillary equipment, manostat and management circuit or the like
Other electrical chains various are connected together, and these are all to it is known in the art, therefore, the most no longer enter it
Row further describes.EBI provides interface.Transceiver 910 can be multiple element, i.e. includes sending
Machine and receiver, it is provided that for the unit communicated with other devices various over a transmission medium.For different
Subscriber equipment, user interface 930 can also is that can external in connect the interface needing equipment, the equipment of connection
Include but not limited to keypad, display, speaker, mike, stick etc..
Processor 900 is responsible for bus architecture and common process, and memorizer 920 can store processor
900 data used when performing operation.
In sum, in the embodiment of the present invention, network side for resource mapping position in full bandwidth fixed position
Common down channel, map multiple candidate's frequency domain send position, wherein, multiple candidate's frequency domains send position
Frequency domain including common down channel acquiescence sends position, and it is equal that network side sends position for multiple candidate's frequency domains
Carry out Interference Detection, and use the interference judgment criterion preset to select candidate's frequency domain of institute's minimum interference to send
Common down channel is transmitted by position, or, network side multiple candidate's frequency domains send in position every
One candidate's frequency domain sends on position, is transmitted common down channel, so, solves same frequency band
The interference problem of other communication system upper and artificial malicious interference problem, be effectively reduced the resource for frequency domain
Mapping position is fixed on the experienced interference of the channel of the fixed position of full bandwidth.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (include but not limited to disk memory,
CD-ROM, optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not take off
Spirit and scope from the embodiment of the present invention.So, if these amendments of the embodiment of the present invention and modification belong to
Within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention be also intended to comprise these change and
Including modification.
Claims (12)
1. the sending method of a common down channel, it is characterised in that including:
Network side, for the resource mapping position common down channel in full bandwidth fixed position, maps multiple time
Transmission position, frequency-selecting territory, wherein, the plurality of candidate's frequency domain sends position and includes that described common down channel is write from memory
The frequency domain recognized sends position；
Described network side sends position for the plurality of candidate's frequency domain and all carries out Interference Detection, and uses default
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
It is transmitted, or, described network side each candidate's frequency in the plurality of candidate's frequency domain sends position
On transmission position, territory, described common down channel is transmitted.
2. the method for claim 1, it is characterised in that network side exists for resource mapping position
The common down channel of full bandwidth fixed position, maps multiple candidate's frequency domain and sends position, specifically include:
Described network side is point on the basis of the acquiescence frequency domain transmission position of described common down channel, at full bandwidth
According to set frequency domain interval determine one by one candidate's frequency domain send position, wherein, described frequency domain interval comprises
The number of Physical Resource Block PRB is not less than the PRB number sent shared by described common down channel；Or
The PRB total number that comprised based on full bandwidth and sending shared by described common down channel
PRB number, calculates confirmable candidate's frequency domain and sends the maximum number of position, and according to institute in full bandwidth
Obtain maximum number determine multiple candidate's frequency domain send position, wherein, determined by multiple candidate's frequency domains send out
The frequency domain sending position to comprise described common down channel acquiescence sends position.
3. method as claimed in claim 1 or 2, it is characterised in that described network side is setting with user
Before standby formal communication, send position for the plurality of candidate's frequency domain and hold consultation and determine.
4. method as claimed in claim 1 or 2, it is characterised in that described network side is for described many
Individual candidate's frequency domain sends position and all carries out Interference Detection, and it is suffered dry to use the interference judgment criterion preset to select
Described common down channel is transmitted by the candidate's frequency domain transmission position disturbing minimum, specifically includes:
Described network side sends position for each candidate's frequency domain and carries out the prison of one or more up channels
Survey, calculate corresponding interference according to monitoring result and judge parameter；
Parameter is judged, according to correspondence based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
It is transmitted.
5. the method as described in any one of claim 1-4, it is characterised in that based on calculating the every of acquisition
The interference that one candidate's frequency domain sends position corresponding judges parameter, according to corresponding interference judgment criterion selection institute
Candidate's frequency domain of minimum interference sends position and is transmitted described common down channel, specifically includes:
If described interference judges that parameter is Signal to Interference plus Noise Ratio, the most described network side selects the candidate that Signal to Interference plus Noise Ratio is maximum
Frequency domain sends position and is transmitted described common down channel；Or,
If described interference judges that parameter is signal interference ratio, the most described network side selects candidate's frequency domain that signal interference ratio is maximum
Send position described common down channel is transmitted；Or,
If described interference judges that parameter is dry ratio of making an uproar, the most described network side selects dry making an uproar than minimum candidate's frequency domain
Send position described common down channel is transmitted；Or,
If described interference judges that parameter is jamming power, the most described network side selects the candidate that jamming power is minimum
Frequency domain sends position and is transmitted described common down channel.
6. the method for reseptance of a common down channel, it is characterised in that including:
Subscriber equipment determines that multiple candidate's frequency domains that network side maps send position；
Described subscriber equipment sends position for the plurality of candidate's frequency domain and carries out described descending public letter respectively
The reception in road processes, and selects candidate's frequency domain of first decoding success common down channel to send position continuation
Carrying out the mutual of follow-up data, wherein, described common down channel is that described network side uses the interference preset
Judgment criterion selects candidate's frequency domain of institute's minimum interference to send what position was transmitted, or, described descending
Common signal channel is that described network side each candidate's frequency domain in the plurality of candidate's frequency domain sends position is sent out
Send and be transmitted on position.
7. the dispensing device of a common down channel, it is characterised in that including:
Resource mapping unit, for for the resource mapping position descending public letter in full bandwidth fixed position
Road, maps multiple candidate's frequency domain and sends position, and wherein, the plurality of candidate's frequency domain sends position and includes described
The frequency domain of common down channel acquiescence sends position；
Transmitting element, all carries out Interference Detection for sending position for the plurality of candidate's frequency domain, and uses
The interference judgment criterion preset selects candidate's frequency domain of institute's minimum interference to send position to described descending public
Channel is transmitted, or, each in the plurality of candidate's frequency domain sends position of described network side is waited
On transmission position, frequency-selecting territory, described common down channel is transmitted.
8. device as claimed in claim 7, it is characterised in that carrying complete for resource mapping position
The common down channel of wide fixed position, when mapping multiple candidate's frequency domain transmission position, described resource maps single
Unit specifically for:
Point on the basis of position is sent, according to setting in full bandwidth by the acquiescence frequency domain of described common down channel
Frequency domain interval determines that candidate's frequency domain sends position, wherein, the Physical Resource Block that described frequency domain interval comprises one by one
The number of PRB is not less than the PRB number sent shared by described common down channel；Or
The PRB total number that comprised based on full bandwidth and sending shared by described common down channel
PRB number, calculates confirmable candidate's frequency domain and sends the maximum number of position, and according to institute in full bandwidth
Obtain maximum number determine multiple candidate's frequency domain send position, wherein, determined by multiple candidate's frequency domains send out
The frequency domain sending position to comprise described common down channel acquiescence sends position.
9. as claimed in claim 7 or 8 device, it is characterised in that described device with subscriber equipment
Before formal communication, described resource mapping unit for the plurality of candidate's frequency domain send position hold consultation and
Determine.
10. device as claimed in claim 7 or 8, it is characterised in that for the plurality of candidate frequency
Transmission position, territory all carries out Interference Detection, and uses the interference judgment criterion preset to select institute's minimum interference
Candidate's frequency domain sends position when being transmitted described common down channel, described transmitting element specifically for:
Send position for each candidate's frequency domain and carry out the monitoring of one or more up channels, according to monitoring
Result calculates corresponding interference and judges parameter；
Parameter is judged, according to correspondence based on the interference calculating each the candidate's frequency domain transmission position obtained corresponding
Interference judgment criterion select candidate's frequency domain of institute minimum interference to send position to described common down channel
It is transmitted.
11. devices as described in any one of claim 8-10, it is characterised in that based on calculating acquisition
The interference that each candidate's frequency domain sends position corresponding judges parameter, selects according to corresponding interference judgment criterion
When described common down channel is transmitted by candidate's frequency domain transmission position of institute's minimum interference, described transmission
Unit specifically for:
If described interference judges that parameter is Signal to Interference plus Noise Ratio, the most described transmitting element selects the time that Signal to Interference plus Noise Ratio is maximum
Described common down channel is transmitted by transmission position, frequency-selecting territory；Or,
If described interference judges that parameter is signal interference ratio, the most described transmitting element selects candidate's frequency that signal interference ratio is maximum
Described common down channel is transmitted by transmission position, territory；Or,
If described interference judges that parameter is dry ratio of making an uproar, the most described transmitting element selects dry making an uproar than minimum candidate's frequency
Described common down channel is transmitted by transmission position, territory；Or,
If described interference judges that parameter is jamming power, the most described transmitting element selects the time that jamming power is minimum
Described common down channel is transmitted by transmission position, frequency-selecting territory.
The reception device of 12. 1 kinds of common down channels, it is characterised in that including:
Position determination unit, for determining that multiple candidate's frequency domains that network side maps send position；
Position selects unit, carries out described descending public letter respectively for sending position for the plurality of candidate's frequency domain
The reception in road processes, and selects candidate's frequency domain of first decoding success common down channel to send position continuation
Carrying out the mutual of follow-up data, wherein, described common down channel is that described network side uses the interference preset
Judgment criterion selects candidate's frequency domain of institute's minimum interference to send what position was transmitted, or, described descending
Common signal channel is that described network side each candidate's frequency domain in the plurality of candidate's frequency domain sends position is sent out
Send and be transmitted on position.
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| CN201510091545.2A CN105992260A (en) | 2015-02-28 | 2015-02-28 | Downlink common channel transmitting, receiving method and device |
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| CN112188617A (en) * | 2020-09-15 | 2021-01-05 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Strong interference resisting method and system suitable for 5G system |
| WO2021057285A1 (en) * | 2019-09-29 | 2021-04-01 | 中兴通讯股份有限公司 | Cell search method and apparatus, user equipment, and storage medium |
| CN113556769A (en) * | 2021-07-21 | 2021-10-26 | 湖南人文科技学院 | Computer data transmission communication method and system based on interference control |
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